Blueberry Oatmeal Crisp with Cinnamon Streusel
A warm dessert of juicy blueberries topped with a crunchy cinnamon oatmeal streusel that’s perfect for year-round enjoyment. This american-inspired desserts ready in about 60 minutes layers fresh blueberries, granulated sugar, lemon juice 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 280 calories and feeds 8, 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 blueberries
- 1/2 cup granulated sugar
- 1 tbsp lemon juice
- 2 tbsp cornstarch
- 1 cup old-fashioned oats
- 3/4 cup all-purpose flour
- 1/2 cup packed brown sugar
- 1 tsp ground cinnamon
- 6 tbsp unsalted butter, melted
- 1/4 tsp salt
Instructions
- Step 1: Preheat your oven to 350°F. In a large bowl, combine 4 cups fresh blueberries, 1/2 cup granulated sugar, 1 tbsp lemon juice, and 2 tbsp cornstarch. Toss gently until blueberries are evenly coated.
- Step 2: Transfer the blueberry mixture into a 9-inch square baking dish and spread evenly.
- Step 3: In a medium bowl, mix together 1 cup old-fashioned oats, 3/4 cup all-purpose flour, 1/2 cup packed brown sugar, 1 tsp ground cinnamon, and 1/4 tsp salt.
- Step 4: Pour 6 tbsp melted unsalted butter over the oat mixture and stir until the mixture is crumbly and holds together when pressed.
- Step 5: Sprinkle the streusel topping evenly over the blueberries.
- Step 6: Bake uncovered for 40-45 minutes until the topping is golden brown and the blueberry filling is bubbling around the edges.
- Step 7: Remove from the oven and allow to cool for 10 minutes before serving warm, ideally with vanilla ice cream or whipped cream.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Blueberry Oatmeal Crisp with Cinnamon Streusel take to make?
Total time is about 60 minutes (15 min prep + 45 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 Blueberry Oatmeal Crisp with Cinnamon Streusel?
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 Blueberry Oatmeal Crisp with Cinnamon Streusel?
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 Blueberry Oatmeal Crisp with Cinnamon Streusel for a different number of people?
The recipe is written for 8 servings. Multiply each ingredient by (your serving target / 8). 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 Blueberry Oatmeal Crisp with Cinnamon Streusel?
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.
