Highball Berry Crumble with Oat Crust
A classic berry dessert with a golden oat crumble topping, featuring fresh berries and a warm, buttery crust. This american-inspired desserts ready in about 65 minutes layers mixed berries, granulated sugar, cornstarch 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 250 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 mixed berries
- 0.25 cup granulated sugar
- 1 tbsp cornstarch
- 1 tsp lemon zest
- 0.5 cup rolled oats
- 0.25 cup all-purpose flour
- 0.25 cup brown sugar
- 0.25 cup unsalted butter
- 0.25 tsp ground cinnamon
- pinch salt
Instructions
- Step 1: Preheat oven to 375°F (190°C). In a large bowl, combine 4 cups mixed berries, 0.25 cup granulated sugar, 1 tbsp cornstarch, and 1 tsp lemon zest; toss until berries are evenly coated and sugar dissolves.
- Step 2: Transfer berry mixture to a 9x9-inch baking dish, spreading evenly.
- Step 3: In a medium bowl, mix 0.5 cup rolled oats, 0.25 cup all-purpose flour, 0.25 cup packed brown sugar, 0.25 tsp ground cinnamon, and a pinch of salt. Cut in 0.25 cup cold diced butter using a pastry cutter until mixture resembles coarse crumbs and holds together when pinched.
- Step 4: Sprinkle crumble topping evenly over berries. Bake for 40-45 minutes until filling bubbles around edges and topping is golden brown. Cool 15 minutes before serving with vanilla ice cream.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Highball Berry Crumble with Oat Crust take to make?
Total time is about 65 minutes (20 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 Highball Berry Crumble with Oat Crust?
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 Highball Berry Crumble with Oat Crust?
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 Highball Berry Crumble with Oat Crust for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 Highball Berry Crumble with Oat Crust?
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.
What others are saying
- ★★★★★
My partner, who's usually picky, absolutely loved this.
- ★★★★☆
Tasty recipe. I'd add a bit more seasoning next time.
- ★★★★☆
Really good but took about 10 minutes longer than stated.
