Healthier Strawberry Oatmeal Crisp Bars
Last updated on June 28th, 2026
These Healthier Strawberry Oatmeal Crisp Bars are a buttery, better-for-you fruit dessert made with layers of vanilla flavoured oat crumble and a sweet, lemony strawberry filling.
Local strawberry season is fleeting, and when you pair them with a buttery sweet, vanilla oat crust and crumble, you know it’s going to be good.
Fruit desserts are my all-time favourite. There’s just something about warm, baked fruit with a buttery, crumbly topping. The consensus seems to be that what distinguishes fruit crisps from crumbles is the addition of oats, so allow me to introduce you to these Strawberry Oatmeal Crisp Bars. A strawberry crisp with an oat base that’s perfect for slicing into individual bars, they’re everything a summer dessert should be.
Here’s everything you’ll need to make these Healthier Strawberry Oatmeal Crisp Bars
Oat crust and crumble
- 175 grams (1 1/3 cups) all-purpose flour
- 3 grams (½ teaspoon) baking soda
- 2 grams (½ teaspoon) kosher salt
- 110 grams (1 1/3 cups) old fashioned rolls oats
- 110 grams (½ cup) dark brown sugar
- 100 grams (½ cup) granulated sugar
- 170 grams (¾ cup) unsalted butter, melted and cooled (sub dairy free baking sticks)
- 6 grams (2 teaspoons) vanilla
Filling
- 454 grams (1 lb) strawberries, hulled and sliced into ½-inch thick slices
- 15 grams (1 tablespoon) fresh lemon juice
- 50 grams (¼ cup) granulated sugar
- 2 grams (1 teaspoon) lemon zest
- 8 grams (1 tablespoon) all-purpose flour (or cornstarch)
The secret? Fresh strawberries are baked right in with no additional cooking required. Plus, the oat crust and crumble are the same—all made in one bowl.
The strawberry filling does take a few extra minutes, but the result is well worth the effort. While baking, the strawberries transform into a bright, lemon-scented, pie-like filling that’s reminiscent of homemade strawberry jam.
🍓 The crisp vs. crumble debate
Did you know that the addition of oats is what traditionally distinguishes a fruit crisp from a crumble?
These bars give you the absolute best of both worlds. A buttery, crumbly topping and an oat-filled base that is sturdy enough to slice up for summer picnics!
How to make these Strawberry Oatmeal Crisp Bars in 5 steps
One of the best things about these bars is how easy they are to make.
- Preheat oven and prepare parchment-lined baking dish.
- Mix together oat crust and crumble and prepare crust.
- Make the filling.
- Pour filling over crust then top with remaining crumble.
- Bake until golden, cool and serve!
These Healthier Strawberry Oatmeal Crisp Bars are sweet, but not too sweet, buttery and bursting with juicy berries. Ideal for a grab-and-go breakfast, brunch, snack or healthier dessert. Try them warm with a scoop of ice cream or a dollop of Greek yogurt!
Try this 4-Ingredient Chia Seed Strawberry Jam or these Strawberry Muffins with Lemon Sugar next.
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Healthier Strawberry Oatmeal Crisp Bars
Ingredients
Oat crust and crumble
- 1 1/3 cups cups all-purpose flour
- ½ teaspoon baking soda
- ½ teaspoon kosher salt
- 1 1/3 cups old fashioned rolls oats
- ½ cup dark brown sugar
- ½ cup granulated sugar
- ¾ cup unsalted butter, melted and cooled (sub dairy free baking sticks)
- 2 teaspoons vanilla
Filling
- 1 lb strawberries, hulled and sliced into ½-inch thick slices
- 1 tablespoon fresh lemon juice
- ¼ cup granulated sugar
- 1 teaspoon lemon zest
- 1 tablespoon all-purpose flour or cornstarch
Instructions
- Preheat oven to 375ºF/190ºC and prepared parchment-lined 9×9-inch baking pan.
- In a medium mixing bowl, whisk together flour, baking soda and salt. Add oats, brown sugar and granulated sugar, continuing to whisk until well blended.
- Whisk vanilla into melted butter then pour over oat mixture. Stir with a spatula or wooden spoon until well-combined and crumbly.
- Press 2/3 of the mixture evenly across the bottom of prepared baking dish to form the base and set aside.
- In a medium mixing bowl, toss diced strawberries with lemon juice. In a small mixing bowl, press together sugar and lemon zest until fragrant and the sugar takes on a yellow hue. Add 8 grams (1 tablespoon) all-purpose flour (or cornstarch) and stir. Pour sugar mixture over strawberry mixture and toss to coat.
- Pour strawberry mixture over oat base, gently smoothing out into corners to form an even layer. Sprinkle remaining 1/3 crumb mixture evenly across the top.
- Bake for 40-45 minutes until golden and the filling is bubbling. Remove from oven and let cool on a wire cooling rack for 15 minutes before serving. For a cleaner cut, allow to cool for up to an hour. Using parchment edges, lift from pan, cut into bars and serve.
