Oat And Flour Crumble


Oat and Flour Crumble is quite a simple dessert to make. It’s crumbly and flavorful but gooey in the middle. This is an ultimate winter dessert that you must try this winter. One of the simplest desserts you can make is crumbles, and I have a really easy oat and flour crumble recipe. It’s low in calories, you can use it to make mini cakes or pies. I personally love it as a dish on its own with some nice cream!

Oat And Flour Crumble

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This crunchy crumble is the ideal garnish for our Build-Your-Own Thanksgiving Pie Bar, an easy apple crumble, or an ice cream sundae. A piece of the unbaked mixture should always be kept on hand in the freezer for last-minute dessert needs.

  • Active Time15 minutes
  • Total Time45 minutes


Makes about 3 cups

1 cup all-purpose flour

1/2 cup light brown sugar

1/2 teaspoon baking powder

1/2 teaspoon ground cinnamon

1/4 teaspoon kosher salt

3/4 cup old-fashioned oats

1/2 cup (1 stick) unsalted butter at room temperature, cut into pieces

Step 1

Turn on the 375°F oven. In a big basin, combine salt, cinnamon, baking soda, flour, and brown sugar. Using your fingertips, incorporate butter into the dry ingredients until pea-sized lumps form. Oats should be added, then mixed with your fingertips until clumps form and the mixture resembles crumb topping. Relax for 15 minutes.

Step 2

Place mixture on a baking sheet lined with paper, and bake for 8 minutes. Stir and mix crumble using a metal spatula. Flip the baking sheet and keep baking for another 8 minutes or until the crumble is a deep golden brown color. Cool down.

Berry-Oat Crumble

Delicious desserts don’t have to be complicated to satisfy. One such example is this straightforward blueberry crumble, which lets the fruit shine beneath a layer of delectable oat-walnut topping. Although this dessert is suitable for certain diets, it is far from being a “healthy” dish. This recipe is not only naturally dairy-free but also gluten-free if the butter on top is replaced with coconut oil or omitted altogether. PS: To make oat flour from steel-cut oats, you’ll need a food processor.

Recipe Summary


15 mins


1 hr


Serves 8


Ingredient Checklist

  • 1 cup steel-cut oats
  • 1 cup light brown sugar
  • 1 cup chopped walnuts
  • 1 ½ teaspoons baking powder
  • 2 large eggs
  • ½ teaspoon ground allspice
  • ¼ teaspoon kosher salt
  • 3 ½ cups fresh blueberries
  • ⅓ cup granulated sugar
  • 2 teaspoons grated lemon zest plus 1 tablespoon fresh juice (from 1 lemon)
  • 3 tablespoons cornstarch
  • ½ teaspoon pure vanilla extract
  • 2 tablespoons unsalted butter, melted


Instructions Checklist

  • Step 1: Set the oven to 350°F. Steel-cut oats should be put in the food processor bowl and processed for about 7 minutes, or until it resembles flour. Oat flour should be combined with brown sugar, walnuts, baking soda, eggs, spices, and salt in a bowl. To blend, stir.
  • Step 2Combine the blueberries, cornstarch, vanilla essence, lemon zest, juice, and granulated sugar. Fill an 8 by 8-inch baking dish with the ingredients and spray with cooking spray. Add the oat mixture on top of the blueberries, drizzle with melted butter, and bake for 40 to 45 minutes, or until the crumble is evenly browned.

Gluten-free Apple Crisp (the perfect easy topping!)

A thick layer of topping made of oats and oat flour lies on top of this gluten-free apple crisp! It tastes just as good as a classic apple crisp. including a dairy-free and vegan option.

First off, check out my vegan and Paleo Apple Crisp if you’re looking for a grain-free apple crisp. It is entirely maple-sweetened and has as its base almond, coconut, and pecan flour.

The topping for today’s gluten-free apple crisp is made of oats and oat flour, making it much more traditional. It is 100% whole grain and gluten-free because it is oat-based.

If you want the crisp to be gluten-free, be sure to use gluten-free oats and oat flour. Check out Are Oats Gluten-Free for further details.

This gluten-free apple crisp is a great fall treat that’s simple to make and will satisfy even gluten-eaters.


Simple crisp ingredients are all there are, but oat flour, which you can prepare at home, is used in place of ordinary flour. So, nothing additional needs to be purchased in order to make this gluten-free apple crisp.

Gluten-free Apple Crisp with Vegan Option

For the topping:

  • Gluten-free oat flour – you can make your own with rolled oats. Read more below for more info!
  • Gluten-free rolled oats – they’re naturally gluten-free but like I said above, you need to make sure to buy certified gluten-free oats if you can’t have gluten.
  • Brown sugar or coconut sugar – I used brown sugar in the photos. The result is darker in color and a bit more crumbly if you use coconut sugar.
  • Butter or coconut oil for a dairy-free/vegan version – if using coconut oil, I recommend refined coconut oil so that you don’t taste the coconut. You can also use vegan butter.
  • Ground cinnamon and salt

How to make oat flour

If you don’t have oat flour on hand, you can process some quick or rolled oats until they are very small and powdery in a food processor, a powerful blender like a Blendtec or Vitamix, or an electric coffee grinder.

For modest amounts, the coffee grinder is my preferred method. followed by the powerful blender. Both of those produce extremely fine oat flour.

To get the oats ground finely enough for this recipe, you may need to grind more oats than you would use if you have a large food processor. The oat flour won’t be as fine even then as it would be with the other two techniques. Still, it will function!

To even get the oats over the blade in my large food processor, I need at least a cup or two of oats.

What you need for the apples:

  • Gluten-free oat flour
  • Brown sugar or coconut sugar
  • Lemon juice
  • Ground cinnamon
  • Vanilla extract
  • Apple chunks

How to make gluten-free apple crisp

  1. Combine the topping’s components.
  2. Get the apple filling ready.
  3. On top of the chopped apples, add the remaining ingredients and whisk to combine.
  4. Place a generous amount of the topping on top of the apple mixture before placing it in the baking dish.
  5. Serve after baking!

Vegan + dairy-free option

Use coconut oil for a vegan and dairy-free variation. If you don’t want any coconut flavor, use refined coconut oil.

Vegan butter is a different option. Of course, using butter (rather than coconut oil) improves the flavor since, well, butter.

So much topping?!

I question whether I’m applying the topping correctly every time I prepare this gluten-free apple crisp. The recipe specifies an 8×8 but I begin to doubt whether I wrote down the correct pan size. There is a LOT of topping!

But it always works out and, after baking, the topping isn’t an excessive quantity. It seems to me to be just right.

The topping is the same as the one I used in my popular Strawberry Rhubarb Crisp over the past few years.

What to serve with apple crisp

You can serve this apple crisp warm, at room temperature or even cold.

And it’s even more better topped off with one of these tasty options.

  • Vegan Custard
  • Vanilla or Maple Ice Cream
  • Vegan Vanilla Sauce 

How to store + freeze this crisp

A covered apple crisp kept at room temperature will keep for a few days, but I advise refrigeration to prevent bacteria from forming on the apples.

Before covering the crisp, allow it to cool completely. The crisp can then be kept in the refrigerator for up to a week by simply covering it with plastic wrap or transferring it to an airtight container.

Alternatively, you might freeze it for up to three months. Take it out and let it thaw in the refrigerator the night before you want to serve it.

Place it on a plate or something so that when it thaws, there won’t be a pool of water in your refrigerator. The day before Thanksgiving, or whenever you want to serve it, you may simply take it out of the freezer and let it sit out for a few hours to defrost.

It’s a terrific dessert to prepare ahead of time for Thanksgiving or any other special occasion.

How to reheat

To reheat the crisp you can put it in the microwave in a safe bowl for a few seconds.

Or you can pop it in the oven at 350°F (176 °C) for 15 minutes or so until completely warmed through.

How to keep the crisp from drying out?

The crisp can dry out so to avoid this when you reheat the crisp you can add foil to cover it until the last 5 minutes when reheating it or add a few dabs of butter to the top.

What apples should I use for this crisp?

To be honest, I usually make this gluten-free apple crisp with whatever I have on hand. Yet, I also find that crisps made with sweet and tart apples taste the finest to me. It merely provides that extra delicious flavor.

To get the ideal blend, I either combine several different types or choose a single apple that has both a tart and sweet flavor.

The standard baking apple is, of course, a granny smith. Since they are recognized for their tartness and crispness, I combine them with a sweeter apple, such as a Honeycrisp apple, which adds crispness as well as a bit more sweetness to blend with sour apples.

The Fuji apple is quite sweet and pairs well with a tart apple. They are ideal for baking apples as well.

Perhaps you might purchase a Gravenstein apple, which is sweet and tart at the same time. It’s delightfully tart and sweet, so if you only want to buy just one sort of apple for this crisp, this is a great one to find.


This summer I made my first Blueberry Crumble with Oat Flour. It was so delicious and wonderful with a scoop of vanilla ice cream.


This is something I also questioned about when looking for recipes. What precisely is the distinction? Supposedly, a crumble is more of a streusel topping made of flour, sugar, and butter, whereas a crisp will contain either nuts or oatmeal mixed in with the sugar and butter to form a crispy top for your dessert. However the bulk of crumble recipes I came across called for oats, which I found to be very perplexing.

I made the decision to turn the old-fashioned oats into flour in an effort to be as accurate as possible. Despite lacking the texture of rolled oats, this still provided the dessert a crunchy top.

During World War II, when supplies for pies and pastries were rationed, crumbles and crisps were invented in Britain. Do you agree that discovering the background of food and dishes is always interesting?


  • granulated sugar
  • cornstarch
  • ground cinnamon
  • kosher salt
  • fresh blueberries
  • lemon juice


  • all-purpose flour
  • oat flour
  • brown sugar
  • butter
  • kosher salt


Turn on the 375 degree oven. Use baking spray to an 8-inch baking dish to prepare it. Use a specific oval baking dish, like the ones the Pioneer Woman has illustrated above, or a round or square cake pan. My favorite of her things is her bakeware.

So that you have everything at hand, gather your ingredients.

Mix the granulated sugar, cornstarch, cinnamon powder, and kosher salt in a sizable bowl. Lemon juice and blueberries are added. Fold gently until the blueberries are thoroughly covered. Put blueberries in the baking dish that has been prepared.


Using a food processor, grind old-fashioned oats until they become a fine powder. I like to grind a larger amount than what I need and then I’ll store it for later use. 

All-purpose flour, oat flour, brown sugar, and kosher salt should be combined in a small bowl. Add a few bits of butter and, using your fingers, work them in completely.

Spread the crumbled topping evenly on the blueberries’ top layer.

Bake for 30 to 40 minutes in a preheated oven, or until the sauce is bubbling and gently browned.

Serve with vanilla ice cream scoops. 4-6 persons can be fed with this dish.

Blueberry Crumble with Oat Flour

This summer I made my first Blueberry Crumble with Oat Flour. It was so delicious and wonderful with a scoop of vanilla ice cream.

Course: Dessert

Cuisine: English

Keyword: Fruit Crisps, Fruit Pies, Oat Flour

Prep Time: 20 minutes

Cook Time: 40 minutes

Total Time: 1 hour

Servings: 6


Glass Mixing Bowls

Cuisinart Food Processor

Oval Bakers



  • 1/2 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon kosher salt
  • 3 cups fresh blueberries
  • 2 teaspoons lemon juice


  • 3/4 cup all-purpose flour
  • 1/4 cup oat flour
  • 1/4 cup brown sugar
  • 5 tablespoons butter
  • 1/2 teaspoon kosher salt


  • Preheat oven to 375 degrees. Prepare a 8-inch baking dish by spraying with baking spray. Gather your ingredients so that you have everything close at hand.
  • In a large bowl, whisk together the granulated sugar, cornstarch, ground cinnamon, and kosher salt. Add blueberries and lemon juice. Gently fold until blueberries are coated well. Spoon blueberries into the prepared baking pan.

Prepare the Crumble:

  • Old-fashioned oats should be processed in a food processor to a fine powder. I prefer to grind more than I will need and then store the extra for later use.
  • All-purpose flour, oat flour, brown sugar, and kosher salt should be combined in a small bowl. Add a few bits of butter and, using your fingers, work them in completely.
  • Spread the crumbled topping evenly on the blueberries’ top layer.
  • Bake for 30 to 40 minutes in a preheated oven, or until the sauce is bubbling and gently browned.
  • Serve with vanilla ice cream scoops. serves 4-6 people.


*Unless otherwise indicated, all butter on this recipe site is salted. 


Calories: 313kcal | Carbohydrates: 54g | Protein: 3g | Fat: 10g | Saturated Fat: 6g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 1g | Cholesterol: 25mg | Sodium: 379mg | Potassium: 110mg | Fiber: 3g | Sugar: 33g | Vitamin A: 332IU | Vitamin C: 8mg | Calcium: 22mg | Iron: 1mg


Oatmeal is a nutritious breakfast food that is made from rolled, steel-cut, or instant oats. It is a whole grain that is rich in vitamins, minerals, fiber, and antioxidants, and has numerous health benefits. Here are some of the top health benefits of oatmeal:

  1. Oatmeal can help lower cholesterol levels Oatmeal contains a type of soluble fiber called beta-glucan, which has been shown to help lower cholesterol levels. Beta-glucan forms a gel-like substance in the digestive tract, which binds with cholesterol and prevents it from being absorbed into the bloodstream. Studies have shown that consuming oatmeal regularly can lead to a reduction in LDL (bad) cholesterol levels, which is a risk factor for heart disease.
  2. Oatmeal can help regulate blood sugar levels Oatmeal has a low glycemic index, which means it can help regulate blood sugar levels by slowing down the absorption of glucose into the bloodstream. This is especially important for people with type 2 diabetes, as it can help prevent spikes in blood sugar levels. The fiber in oatmeal also helps to keep you feeling full for longer, which can prevent overeating and help with weight management.
  3. Oatmeal can aid digestion Oatmeal is a good source of both soluble and insoluble fiber, which can aid digestion and promote regular bowel movements. Soluble fiber helps to soften stools, making them easier to pass, while insoluble fiber adds bulk to stools, which helps to prevent constipation. Oatmeal also contains a prebiotic called beta-glucan, which feeds the good bacteria in the gut and helps to maintain a healthy digestive system.
  4. Oatmeal can boost immunity Oatmeal is rich in antioxidants, which can help to boost the immune system and protect the body against disease. Antioxidants help to neutralize free radicals, which are harmful molecules that can cause cell damage and contribute to the development of chronic diseases such as cancer and heart disease. Oatmeal also contains vitamins and minerals such as zinc and selenium, which are essential for immune function.
  5. Oatmeal can promote weight loss Oatmeal is a low-calorie, low-fat, and low-sugar food that can help with weight loss when consumed as part of a balanced diet. The fiber in oatmeal helps to keep you feeling full for longer, which can prevent overeating and reduce calorie intake. Oatmeal also has a low glycemic index, which means it can help to regulate blood sugar levels and prevent spikes in insulin, which can lead to weight gain.
  6. Oatmeal can improve heart health Oatmeal is rich in fiber, which has been shown to have numerous benefits for heart health. Fiber helps to lower cholesterol levels, which is a risk factor for heart disease. Oatmeal also contains antioxidants and anti-inflammatory compounds, which can help to reduce inflammation in the body and protect against the development of heart disease. In addition, the magnesium and potassium in oatmeal can help to regulate blood pressure, which is another important factor in heart health.
  7. Oatmeal can improve brain function Oatmeal is a good source of vitamins and minerals such as vitamin B1, magnesium, and phosphorus, which are essential for brain function. The fiber in oatmeal can also help to regulate blood sugar levels, which can prevent energy crashes and improve mental clarity. Oatmeal also contains antioxidants, which can help to protect against oxidative damage in the brain and promote healthy cognitive function.
  8. Oatmeal can improve skin health Oatmeal can be used topically to improve skin health, as it has anti-inflammatory and moisturizing properties. Oatmeal baths have been used for centuries to soothe and heal irritated skin, and oatmeal

Questions about this gluten-free apple crisp?

  • Can I use something other than oat flour?Unfortunately not. It’s not really interchangeable with any other type of flour.
  • Can I use something other than oats?No, they’re essential to the recipe. I haven’t had good luck with quinoa flakes, rice flakes, etc.
  • What other sweeteners could I use?You need to use a granulated one. If you have one that you use that’s a good sub for brown sugar, it should probably work in this recipe.
  • What can I use instead of coconut oil or butter?I think vegan butter would work. Use the same amount as butter listed. I don’t think olive oil or another liquid oil would.
  • If you use coconut oil, can you taste the coconut?Not if you use refined coconut oil (which I definitely prefer to do in this apple crisp recipe)!
  • Can I use a different type of fruit?Pears and other types of fruit have varying amounts of liquid in them. So I recommend finding a recipe for whatever type of fruit you want to use and then you could use this topping recipe.

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