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Baked Oatmeal Recipe


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  • Author: Martha Stewart
  • Total Time: 45 minutes
  • Yield: 6 servings 1x
  • Diet: Vegetarian

Description

This easy baked oatmeal is a wholesome, make-ahead breakfast that’s perfect for busy mornings. With hearty oats, natural sweeteners, and your choice of mix-ins, it bakes into a delicious, cake-like casserole that you can slice and serve all week long. Naturally customizable and meal-prep friendly!


Ingredients

Scale

Base Ingredients:

  • 2 cups old-fashioned rolled oats (use gluten-free if needed)
  • 1 teaspoon baking powder
  • 1½ teaspoons ground cinnamon
  • ¼ teaspoon salt
  • 2 large eggs (or 2 flax eggs for vegan)
  • 1¾ cups milk (dairy or non-dairy)
  • ⅓ cup pure maple syrup or honey
  • 1 large ripe banana, mashed (about ½ cup)
  • 1 teaspoon vanilla extract
  • 2 tablespoons melted butter or coconut oil

Optional Mix-Ins (Choose Your Favorites):

  • 1 cup fresh or frozen blueberries
  • ½ cup chopped walnuts or pecans
  • ⅓ cup chocolate chips
  • 1 cup diced apples
  • ½ cup dried cranberries or raisins
  • ¼ cup chia seeds or ground flaxseed

For Topping (Optional):

  • Extra berries
  • Sliced almonds
  • A drizzle of maple syrup
  • Greek yogurt
  • Nut butter

Instructions

Step 1: Prepare Your Oven and Pan
Preheat your oven to 350°F (175°C). Generously grease an 8×8-inch baking dish with butter or cooking spray. You can also line it with parchment paper for easier removal and serving.

Step 2: Mix the Dry Ingredients
In a large mixing bowl, combine the rolled oats, baking powder, cinnamon, and salt. Whisk these together until evenly distributed. This ensures the leavening and spices are incorporated throughout every bite.

Step 3: Prepare the Wet Ingredients
In a medium bowl, mash the banana thoroughly with a fork until mostly smooth with just a few small lumps remaining. Add the eggs, milk, maple syrup, vanilla extract, and melted butter. Whisk everything together until well combined and the mixture is uniform.

Step 4: Combine Wet and Dry Ingredients
Pour the wet ingredients into the bowl with the dry ingredients. Gently stir with a wooden spoon or spatula until everything is just combined. Don’t overmix—it’s okay if there are a few streaks of dry oats remaining.

Step 5: Add Your Mix-Ins
Fold in your chosen mix-ins gently. If using berries, reserve a handful to scatter on top for a beautiful presentation. Popular combinations: blueberries and almonds, chocolate chips and walnuts, or diced apples with extra cinnamon.

Step 6: Transfer to Baking Dish
Pour the oatmeal mixture into your prepared baking dish, spreading it evenly with a spatula. If you reserved some berries or nuts, scatter them over the top now. This creates a gorgeous finished presentation.

Step 7: Bake to Perfection
Place the baking dish in your preheated oven and bake for 35-40 minutes. The baked oatmeal is done when the top is golden brown, the edges are set, and a toothpick inserted into the center comes out mostly clean. The center should still be slightly soft but not jiggly.

Step 8: Cool and Serve
Remove from the oven and let the baked oatmeal cool on a wire rack for at least 10 minutes. This cooling time allows it to set properly so it slices cleanly. Cut into 6 squares and serve warm with your favorite toppings like yogurt, fresh fruit, a drizzle of maple syrup, or a dollop of nut butter.

Notes

  • For Extra Creamy Texture: Add an extra ¼ cup of milk to the mixture before baking. The oatmeal will be softer and more pudding-like.
  • Sweetness Level: This recipe is moderately sweet. For sweeter oatmeal, increase maple syrup to ½ cup. For less sweetness, reduce to ¼ cup.
  • Frozen Fruit: If using frozen berries, do not thaw them first. Add them directly to the batter frozen to prevent excess moisture.
  • Make It Vegan: Use non-dairy milk, replace eggs with flax eggs (2 tablespoons ground flaxseed + 6 tablespoons water, let sit 5 minutes), and use coconut oil instead of butter.
  • Texture Preference: For chewier texture, bake for 35 minutes. For softer, more pudding-like texture, bake for 40-45 minutes and add that extra milk.
  • Individual Portions: You can bake this in a muffin tin for individual servings. Reduce baking time to 20-25 minutes.
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 square (⅙ of recipe)
  • Calories: 265
  • Sugar: 15g
  • Sodium: 185mg
  • Fat: 8g
  • Saturated Fat: 2.5g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 42g
  • Fiber: 5g
  • Protein: 8g
  • Cholesterol: 65mg