One-Pan Lemon Blueberry Crumble
Warm, juicy blueberries baked under a buttery oat crumble topping with bright lemon zest, ready in 50 minutes for a simple yet sophisticated dessert. This American-inspired recipe, ready in about 50 minutes, layers blueberries, lemon, granulated sugar 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 240 calories and feeds 6, 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
- 4 cups, fresh or frozen blueberries
- 1, zested and juiced lemon
- 1/2 cup granulated sugar
- 3 tbsp all-purpose flour
- 1/2 cup rolled oats
- 1/4 cup, cold and cubed unsalted butter
- 1/4 cup brown sugar
- 1/4 tsp ground cinnamon
The bakeware we’d bake this in → Best Bakeware Sets in 2026: Top Picks + Buying Guide
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Preheat oven to 375°F (190°C). In a medium bowl, toss 4 cups blueberries with 1 tbsp lemon zest, 1 tbsp lemon juice, 1/2 cup granulated sugar, and 3 tbsp all-purpose flour until coated.
- Step 2: Transfer the blueberry mixture to a 9-inch baking dish, spreading it evenly.
- Step 3: In a separate bowl, combine 1/2 cup rolled oats, 1/4 cup brown sugar, 1/4 tsp ground cinnamon, and 1/4 cup cold cubed butter, then use a fork to cut the butter into the dry ingredients until crumbly.
- Step 4: Sprinkle the oat mixture evenly over the blueberries, pressing gently to form a cohesive crumble layer.
- Step 5: Bake for 35-40 minutes, until the blueberries are bubbling around the edges and the topping is golden brown.
- Step 6: Let cool for 15 minutes before serving to allow the filling to set.








