Baked Oatmeal Squares with Mixed Berries and Walnuts

By AislePrompt Editorial · Published 2026-06-07 · Updated 2026-06-07

These wholesome baked oatmeal squares combine hearty oats with juicy mixed berries and crunchy walnuts for a naturally sweet, healthy dessert or snack. This American-inspired recipe (gluten free option), ready in about 50 minutes, layers rolled oats, baking powder, ground cinnamon 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 180 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 rolled oats
• 1 tsp baking powder
• 1/2 tsp ground cinnamon
• 1/4 tsp salt
• 1 1/2 cups unsweetened almond milk
• 1/3 cup pure maple syrup
• 2 large eggs
• 1 tsp vanilla extract
• 1 cup mixed berries (fresh or frozen)
• 1/2 cup chopped walnuts

Instructions

1. Step 1: Preheat oven to 350°F. In a large bowl, combine 2 cups rolled oats, 1 tsp baking powder, 1/2 tsp ground cinnamon, and 1/4 tsp salt, mixing well.
2. Step 2: In a separate bowl, whisk together 1 1/2 cups unsweetened almond milk, 1/3 cup pure maple syrup, 2 large eggs, and 1 tsp vanilla extract until smooth.
3. Step 3: Pour the wet ingredients into the oat mixture and stir until combined. Gently fold in 1 cup mixed berries and 1/2 cup chopped walnuts.
4. Step 4: Transfer the batter to a greased 8x8-inch baking pan, spreading evenly. Bake for 35-40 minutes until the top is golden and a toothpick inserted in the center comes out clean.
5. Step 5: Let cool for 10 minutes before cutting into squares. Serve warm or at room temperature.