Baked Oat and Walnut Fruit Crisp

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A wholesome baked fruit crisp combining oats, walnuts, and mixed berries for a comforting yet healthy dessert. This american-inspired desserts (vegetarian) ready in about 55 minutes layers rolled oats, chopped walnuts, whole wheat flour 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 220 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.

Prep: 15 min Cook: 40 min Serves 6 American cuisine 220 cal/serving
Plan a meal with the AI → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Instructions

  1. Step 1: Preheat oven to 350°F. In a large bowl, combine 3 cups mixed berries, 1 tbsp lemon juice, 2 tbsp maple syrup, and 1 tbsp cornstarch. Toss gently to coat and transfer to a greased 8x8-inch baking dish.
  2. Step 2: In another bowl, mix 1 cup rolled oats, 1/2 cup chopped walnuts, 1/4 cup whole wheat flour, 1/4 cup brown sugar, and 1 tsp cinnamon.
  3. Step 3: Melt 3 tbsp unsalted butter in a small saucepan over low heat until fully melted. Pour the melted butter into the oat mixture and stir until crumbly.
  4. Step 4: Evenly sprinkle the oat and walnut topping over the berry mixture in the baking dish.
  5. Step 5: Bake in the preheated oven for 35-40 minutes until the topping is golden brown and the berry juices are bubbling around the edges.
  6. Step 6: Allow to cool for 10 minutes before serving warm.

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Bakeware & baking tools → Shop all kitchen tools →

Frequently asked questions

How long does Baked Oat and Walnut Fruit Crisp take to make?

Total time is about 55 minutes (15 min prep + 40 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 Baked Oat and Walnut Fruit Crisp?

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 Baked Oat and Walnut Fruit Crisp?

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 Baked Oat and Walnut Fruit Crisp 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.

Is Baked Oat and Walnut Fruit Crisp vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.