dessert

Strawberry Oatmeal Crumble Bars

Chef Olivia

January 8, 2026
4 min read

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Why Make This Recipe

Strawberry Oatmeal Crumble Bars are a delightful treat that brings together the wholesome goodness of oats and the sweet freshness of strawberries. They are perfect for breakfast, a snack, or dessert. These bars are easy to make and deliciously satisfying, making them a great choice for any occasion. If you have fresh strawberries, this recipe is a wonderful way to use them while creating a dessert that everyone will love.

How to Make Strawberry Oatmeal Crumble Bars

Ingredients

1/2 cup unsalted butter (melted)
1 cup all-purpose flour
3/4 cup old-fashioned oats
1/2 cup granulated sugar
1/4 cup light brown sugar (packed)
1/2 teaspoon salt (or to taste)
2 cups coarsely chopped fresh strawberries
1/3 cup granulated sugar
2 tablespoons lemon juice
2 teaspoons cornstarch

Strawberry Oatmeal Crumble Bars

Directions

Crust and Crumble Topping:

Preheat your oven to 350°F (175°C). Line an 8-inch square pan with aluminum foil and spray it with cooking spray; set it aside. Lining the pan helps with cleanup and is recommended.
In a large, microwave-safe bowl, melt the butter for about 1 minute on high power.
Add the flour, oats, both sugars, and optional salt, then stir to combine. The mixture will be dry and sandy with some larger crumble pieces.
Set aside 1 heaping cup of this mixture to sprinkle on later as crumble topping.
Transfer the remaining mixture to the prepared pan, and using a spatula or your fingers, press it down firmly to create an even, smooth, flat crust; set aside.

Strawberry Layer:

In another bowl, combine the chopped strawberries, 1/3 cup granulated sugar, lemon juice, and cornstarch. Mix gently until the strawberries are well coated.
Pour the strawberry mixture over the crust in the pan, spreading it out evenly.
Finally, sprinkle the reserved crumble mixture over the strawberries, covering them well.
Bake in the preheated oven for about 25-30 minutes, or until the top is golden brown and bubbly.
Allow the bars to cool completely before lifting them out of the pan using the foil. Cut into squares and enjoy!

How to Serve Strawberry Oatmeal Crumble Bars

These bars can be served at room temperature or chilled. They are wonderful on their own, but you can also serve them with a scoop of vanilla ice cream or a dollop of whipped cream for an extra treat. Pair them with a cup of tea or coffee for a comforting snack.

How to Store Strawberry Oatmeal Crumble Bars

Store your Strawberry Oatmeal Crumble Bars in an airtight container at room temperature for up to 3 days. If you want to keep them longer, you can refrigerate them for up to a week. They also freeze well! Just wrap them tightly in plastic wrap and place them in a freezer-safe bag for up to 3 months.

Tips to Make Strawberry Oatmeal Crumble Bars

Use fresh strawberries for the best flavor, but you can also use frozen berries if needed—just thaw and drain excess liquid.
To enhance the flavor, consider adding a teaspoon of vanilla extract to the crust mixture.
Make sure to press the crust firmly into the pan to create a sturdy base for your bars.

Variation

You can easily modify this recipe by adding different fruits like blueberries or raspberries. For a nutty flavor, consider mixing in chopped nuts like almonds or walnuts into the crumble topping.

FAQs

1. Can I use another type of fruit?
Yes, you can substitute strawberries with fruits like blueberries, raspberries, or peaches.

2. How do I ensure the crumble topping stays crunchy?
Make sure to use old-fashioned oats and press the crust firmly. Baking until golden will also help with crunchiness.

3. Can I make these bars vegan?
Yes, you can substitute the butter with a vegan alternative and use a flaxseed egg as a binder if needed.

These Strawberry Oatmeal Crumble Bars are a simple yet delicious way to enjoy the fresh flavors of strawberries, bringing joy to your table!