Strawberry Oat Crumb Bars are a delicious, fruity, and buttery dessert that perfectly balances the sweetness of fresh strawberries with the hearty texture of oats. These bars make a great breakfast treat, snack, or dessert and are easy to make with simple ingredients. Follow this easy strawberry oat crumb bar recipe for a sweet, crumbly delight that everyone will love!
Ingredients Required
Dry Ingredients:
- 1 1/2 cups all-purpose flour
- 1 cup rolled oats
- 1/2 cup brown sugar (packed)
- 1/4 cup granulated sugar
- 1/2 tsp baking powder
- 1/2 tsp salt
- 1/2 tsp cinnamon (optional, for extra flavor)
Wet Ingredients:
- 1/2 cup unsalted butter (melted and slightly cooled)
- 1 large egg
- 1 tsp vanilla extract
Strawberry Filling:
- 2 cups fresh or frozen strawberries (hulled and diced)
- 1/3 cup granulated sugar
- 1 tbsp cornstarch (to thicken the filling)
- 1 tbsp lemon juice
- 1/2 tsp vanilla extract
Topping:
- 1/4 cup rolled oats (for extra crunch)
- 2 tbsp chopped nuts (optional, for added texture)
- 1 tbsp powdered sugar (for dusting, optional)
Step-by-Step Instructions
Step 1: Preheat and Prepare
- Preheat the oven to 350°F (175°C).
- Line an 8×8-inch baking pan with parchment paper and lightly grease it.
Step 2: Prepare the Strawberry Filling
- In a small saucepan, combine strawberries, sugar, cornstarch, and lemon juice.
- Cook over medium heat, stirring occasionally, until the mixture thickens (about 5-7 minutes).
- Remove from heat and stir in vanilla extract.
- Let it cool while preparing the oat crumb mixture.
Step 3: Mix Dry Ingredients
- In a large bowl, whisk together flour, oats, brown sugar, granulated sugar, baking powder, salt, and cinnamon.
Step 4: Combine with Wet Ingredients
- Add melted butter, egg, and vanilla extract to the dry mixture.
- Stir until the mixture is crumbly and well combined.
Step 5: Assemble the Bars
- Press two-thirds of the oat mixture firmly into the bottom of the prepared baking pan.
- Spread the strawberry filling evenly over the base.
- Sprinkle the remaining oat mixture and extra oats on top.
- Add chopped nuts if desired.
Step 6: Bake the Bars
- Bake for 30-35 minutes, or until the top is golden brown and the filling is bubbling.
- Let the bars cool in the pan for 15 minutes, then transfer to a wire rack.
Step 7: Add Final Touches
- Once completely cooled, dust with powdered sugar.
- Slice into squares and enjoy!

Tips for the Best Strawberry Oat Crumb Bars
- Use fresh strawberries for the best flavor, but frozen ones work well too.
- Do not overbake – the bars should be golden but still slightly soft in the center.
- Chill before slicing for cleaner cuts.
- Swap strawberries for raspberries, blueberries, or peaches for variety.
- Add a drizzle of white chocolate or honey for extra sweetness.
Serving Suggestions
- Enjoy with a scoop of vanilla ice cream.
- Serve warm with a dollop of Greek yogurt.
- Store in an airtight container for up to 5 days.
This easy strawberry oat crumb bar recipe is a perfect combination of sweet fruit, buttery crust, and crunchy topping. Whether you’re looking for a healthy-ish snack or a crowd-pleasing dessert, these bars are sure to impress. Try this homemade strawberry oat bar recipe today and enjoy a taste of summer all year round!