Ingredients
Scale
For the Oatmeal Base:
- 2 cups old-fashioned rolled oats (certified gluten-free if needed)
- 1 teaspoon baking powder
- 1½ teaspoons ground cinnamon
- ½ teaspoon ground nutmeg
- ¼ teaspoon salt
- 2 cups milk (dairy or non-dairy)
- ⅓ cup pure maple syrup or honey
- 2 large eggs
- 3 tablespoons melted butter or coconut oil
- 2 teaspoons vanilla extract
For the Apple Filling:
- 2-3 medium apples (about 3 cups diced), peeled and chopped into ½-inch pieces
- 1 tablespoon lemon juice (prevents browning)
- 1 tablespoon brown sugar (optional, for extra sweetness)
- ½ teaspoon cinnamon
Optional Toppings:
- ¼ cup chopped walnuts or pecans
- 2 tablespoons brown sugar for sprinkling on top
- Extra butter or coconut oil for greasing the pan
Instructions
- Preheat and Prepare: Preheat your oven to 375°F (190°C). Grease an 8×8-inch or 9×9-inch baking dish with butter or coconut oil, or line it with parchment paper for easy cleanup. Set aside.
- Prepare the Apples: Peel and dice your apples into bite-sized chunks (about ½-inch pieces). Toss them in a small bowl with 1 tablespoon of lemon juice, ½ teaspoon cinnamon, and optional brown sugar. This prevents browning and adds extra flavor. Set aside.
- Mix the Dry Ingredients: In a medium mixing bowl, combine the rolled oats, baking powder, cinnamon, nutmeg, and salt. Whisk together until evenly distributed. This ensures your spices are evenly dispersed throughout the dish.
- Mix the Wet Ingredients: In a large mixing bowl, whisk together the milk, maple syrup (or honey), eggs, melted butter (or coconut oil), and vanilla extract until well combined and slightly frothy. The eggs should be fully incorporated with no streaks.
- Combine Everything: Pour the dry oat mixture into the wet ingredients and stir gently until just combined. Don’t overmix—it’s okay if there are a few small lumps. Fold in about two-thirds of your prepared apples, reserving the rest for topping.
- Assemble the Dish: Pour the oatmeal mixture into your prepared baking dish and spread it evenly with a spatula. Arrange the remaining apple pieces on top in an even layer. If using nuts, sprinkle them over the top now. For an extra-crispy top, sprinkle with a little brown sugar and dot with small pieces of butter.
- Bake: Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and the center is set. The oatmeal should be firm to the touch and slightly pulling away from the edges. A knife inserted into the center should come out mostly clean.
- Cool and Serve: Remove from the oven and let cool for 5-10 minutes before serving. This allows the oatmeal to set up properly and makes it easier to cut into portions. Serve warm with your favorite toppings like yogurt, milk, extra maple syrup, or a dollop of whipped cream.
Notes
- Apple Varieties: For best results, use a mix of sweet and tart apples. Honeycrisp, Granny Smith, Gala, and Fuji all work beautifully. Avoid overly soft varieties like Red Delicious.
- Texture Preference: For a creamier texture, use 2¼ cups of milk. For a firmer, more cake-like texture, stick with 2 cups.
- Sweetness Level: This recipe is moderately sweet. If you prefer sweeter oatmeal, increase the maple syrup to ½ cup or add an extra tablespoon of brown sugar to the apple mixture.
- Make It Vegan: Use non-dairy milk (almond, oat, or coconut), replace eggs with flax eggs (2 tablespoons ground flaxseed + 6 tablespoons water, let sit 5 minutes), use coconut oil instead of butter, and replace honey with maple syrup.
- Gluten-Free: Use certified gluten-free oats. Regular oats are often processed in facilities that also process wheat.
- Protein Boost: Add ¼ cup of your favorite protein powder to the dry ingredients, or stir in 2 tablespoons of nut butter with the wet ingredients.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Gluten Free
Nutrition
- Serving Size: 1 slice (⅙ of recipe)
- Calories: 285
- Sugar: 18g
- Sodium: 180mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 3.5g
- Trans Fat: 0g
- Carbohydrates: 45g
- Fiber: 5g
- Protein: 7g
- Cholesterol: 55mg