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Healthy Blueberry Baked Oatmeal Recipe

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4.1 from 73 reviews

This Healthy Blueberry Baked Oatmeal is a comforting and nutritious breakfast option featuring gluten-free rolled oats, fresh or frozen blueberries, and optional protein powder. Baked to golden perfection, it offers a naturally sweetened, hearty dish perfect for meal prepping or a wholesome start to your day.

  • Total Time: 55-60 minutes
  • Yield: 9 servings

Ingredients

Dry Ingredients

  • 3 cups rolled oats (certified gluten-free if needed)
  • 1 1/2 teaspoons baking powder
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon salt
  • 3-4 servings vanilla or plain protein powder (optional)

Wet Ingredients

  • 2 1/4 cups dairy-free milk
  • 2 large eggs
  • 1/4 cup maple syrup
  • 2 teaspoons vanilla extract

Fruit

  • 1 1/2 cups fresh or frozen blueberries

Instructions

  1. Preheat oven and prepare pan. Preheat the oven to 350°F and line a 9×9-inch square baking dish with parchment paper to prevent sticking and ensure easy removal.
  2. Mix wet ingredients. In a large mixing bowl, whisk together the dairy-free milk, eggs, maple syrup, and vanilla extract until smooth and combined, creating the base for the oatmeal mixture.
  3. Add dry ingredients. Gradually stir in the rolled oats, baking powder, ground cinnamon, salt, and optional protein powder using a rubber spatula or wooden spoon until thoroughly combined.
  4. Incorporate blueberries. Gently fold in the blueberries, reserving about 1/2 cup to sprinkle on top for added texture and visual appeal before baking.
  5. Transfer to baking dish. Pour the oatmeal mixture into the prepared pan, smoothing the surface, and then evenly scatter the reserved blueberries on top.
  6. Bake the oatmeal. Place the baking dish in the preheated oven and bake for 45-50 minutes, checking at 30 minutes to cover the edges with foil if they appear too brown, until the center is set and the top is golden.
  7. Cool and serve. Allow the baked oatmeal to cool for 10-15 minutes. Cut into squares and serve warm or at room temperature, optionally topped with nut butter, Greek yogurt, chopped nuts, or additional fresh fruit.

Notes

  • Use certified gluten-free oats if you need to keep the recipe gluten-free.
  • Maple syrup adds natural sweetness, but you can adjust sweetness to taste or substitute with honey if preferred.
  • Protein powder is optional but adds an extra nutritional boost; choose vanilla or plain flavor.
  • Frozen blueberries can be used without thawing for convenience.
  • Covering the edges with foil partway through baking prevents over-browning.
  • For a creamier texture, let the baked oatmeal set longer before cutting.
  • Author: Madelynn
  • Prep Time: 10 minutes
  • Cook Time: 45-50 minutes
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free