Description
Homemade blueberry oatmeal crumble bars deliver sweet summer comfort with layers of buttery oats and juicy berries. Crumbly, golden edges and rich fruit filling make these bars a delightful treat you’ll crave again and again.
Ingredients
Scale
- 2 cups blueberries (fresh or frozen)
- 1 ½ cups old-fashioned oats
- 1 ¼ cups all-purpose flour
- ¾ cup unsalted butter (melted)
- ½ cup brown sugar (packed)
- ⅓ cup granulated sugar
- 1 tbsp cornstarch
- ½ tsp baking powder
- ½ tsp cinnamon (optional)
- ¼ tsp salt
- 1 tsp lemon juice
- 1 tsp vanilla extract
Instructions
- Crust Composition: Thoroughly blend oats, flour, brown sugar, baking powder, cinnamon, and salt. Incorporate melted butter until a textured, crumbly consistency emerges. Press two-thirds of this mixture firmly into parchment-lined baking pan, creating a robust base.
- Blueberry Transformation: In a simmering saucepan, unite blueberries, sugar, cornstarch, lemon juice, and vanilla. Gently cook, stirring constantly, until the mixture thickens and develops a glossy, jam-like consistency. Allow brief cooling before spreading evenly across the established crust.
- Final Assembly & Baking: Lavishly dust the remaining oat mixture over the blueberry layer, ensuring complete coverage. Slide the pan into a preheated 350F (175C) oven and bake until the surface turns a golden amber and the edges bubble with fruity intensity, approximately 30-35 minutes.
- Cooling & Serving: Remove from oven and let the bars rest, allowing the layers to set and flavors to meld. Once cooled to room temperature, slice into neat squares, revealing the luscious blueberry filling nestled between crisp, buttery oat layers.
Notes
- Use cold butter and mix until the mixture resembles coarse breadcrumbs for a flaky, crisp topping.
- Add cornstarch to prevent excess liquid and ensure a thick, spreadable filling that won’t make the crust soggy.
- Substitute gluten-free flour and oats for a celiac-friendly version, or replace butter with coconut oil for a dairy-free alternative.
- Cover with aluminum foil halfway through baking if the top browns too quickly, ensuring even cooking and a golden-brown finish.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Breakfast, Snacks, Desserts
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 13
- Calories: 180
- Sugar: 10 g
- Sodium: 120 mg
- Fat: 7 g
- Saturated Fat: 4 g
- Unsaturated Fat: 3 g
- Trans Fat: 0 g
- Carbohydrates: 26 g
- Fiber: 2 g
- Protein: 3 g
- Cholesterol: 20 mg