Oven-Baked Blueberry Crumb Bars
Sweet and tangy blueberry filling layered under a buttery crumb topping, baked into easy bars perfect for brunch or dessert. This american-inspired desserts ready in about 65 minutes layers all-purpose flour, granulated sugar, baking powder into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 320 calories and feeds 9, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 cups all-purpose flour
- 3/4 cup granulated sugar
- 1 cup (2 sticks), cold and cubed unsalted butter
- 1 tsp baking powder
- 1/4 tsp salt
- 1 large egg
- 1 tsp vanilla extract
- 2 cups fresh blueberries
- 1 tsp lemon zest
- 1 tbsp cornstarch
- 1/4 cup brown sugar
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Instructions
- Step 1: Preheat oven to 350°F. In a large bowl, combine 2 cups all-purpose flour, 3/4 cup granulated sugar, 1 tsp baking powder, and 1/4 tsp salt.
- Step 2: Add 1 cup cold cubed unsalted butter and use a pastry cutter or your fingers to blend until mixture resembles coarse crumbs.
- Step 3: In a small bowl, whisk 1 large egg and 1 tsp vanilla extract. Add to flour mixture and stir until dough starts to come together.
- Step 4: Reserve 1 cup of the crumb mixture for topping. Press remaining dough evenly into the bottom of a greased 9x9-inch baking pan.
- Step 5: In another bowl, toss 2 cups fresh blueberries with 1 tbsp cornstarch, 1/4 cup brown sugar, and 1 tsp lemon zest until coated. Spread evenly over the crust.
- Step 6: Sprinkle the reserved crumb topping evenly over the blueberry layer.
- Step 7: Bake for 45 to 50 minutes until the top is golden and the blueberry filling is bubbly. Let cool completely before cutting into bars.
Frequently asked questions
How long does Oven-Baked Blueberry Crumb Bars take to make?
Total time is about 65 minutes (15 min prep + 50 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover Oven-Baked Blueberry Crumb Bars?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in Oven-Baked Blueberry Crumb Bars?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Oven-Baked Blueberry Crumb Bars for a different number of people?
The recipe is written for 9 servings. Multiply each ingredient by (your serving target / 9). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Oven-Baked Blueberry Crumb Bars?
American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
