2. Mix the Dry Ingredients
- In a large bowl, whisk together 3 cups oats, 1½ tsp baking powder, 2 tsp cinnamon, ¼ tsp nutmeg, ¾ tsp salt, and ½ cup brown sugar. This is your flavor base—don’t skimp on the spices!
3. Combine Wet Ingredients
- In a separate bowl or large measuring cup, whisk 2½ cups milk, 2 eggs, and 1 tsp vanilla. Whisk until smooth—no eggy streaks!
4. Bring It All Together
- Pour the wet mixture into the dry ingredients. Add 4 tbsp melted butter or coconut oil. Stir until fully combined. It’ll look soupy—that’s okay!
5. Layer & Bake
- Scatter diced apples evenly across the bottom of the dish. Pour the oatmeal mixture over the top. Cover and refrigerate overnight if prepping ahead.
- Bake at 325°F for 35-45 mins until golden and set. A little jiggle is fine—it’ll firm up as it cools.
Pro Tips
- Apple prep: Use a mix of tart and sweet apples for balanced flavor. Granny Smith + Honeycrisp = perfection.
- Crispy top: Broil for 1-2 mins at the end for extra crunch. Watch closely—it burns fast!
- Freeze it: Bake, cool, and slice into portions. Freeze up to 3 months. Reheat in the microwave or oven.
FAQ
Can I use steel-cut oats?
Nope—they won’t soften enough. Stick with old-fashioned or quick oats.
Why is my oatmeal soggy?
Too much liquid or underbaking. Use a smaller pan for thicker oatmeal, and bake until the center is set.
Can I skip the apples?
Absolutely! This works as a plain baked oatmeal too. Add berries or bananas for variety.
Serving Ideas
- Breakfast bar: Set out toppings like yogurt, nuts, and maple syrup.
- Dessert twist: Serve warm with a scoop of vanilla ice cream. Breakfast-for-dessert? Yes, please.
- On-the-go: Slice into squares and wrap individually for easy grab-and-go breakfasts.
Nutrition (Per Serving):
Calories: 285 | Carbs: 42g | Protein: 8g | Fat: 10g
Stats vary based on milk and sweetener choices.

Amish-Style Apple and Cinnamon Baked Oatmeal
Prep Time: 15 minutes | Cook Time: 45 minutes | Total Time: 1 hour | Servings: 8
Ingredients
- 3 cups old-fashioned rolled oats
- 1½ tsp baking powder
- 2 tsp ground cinnamon
- ¼ tsp ground nutmeg
- ¾ tsp salt
- ½ cup lightly packed brown sugar
- 2½ cups milk
- 2 large eggs
- 1 tsp vanilla extract
- 4 tbsp melted butter or coconut oil
- 2-3 large apples (Honeycrisp or Gala), peeled and diced
Instructions
- Prep: Grease a 9×13-inch baking dish. Preheat oven to 325°F.
- Mix Dry Ingredients: Whisk oats, baking powder, cinnamon, nutmeg, salt, and brown sugar in a large bowl.
- Combine Wet Ingredients: In a separate bowl, whisk milk, eggs, and vanilla.
- Assemble: Pour wet ingredients into dry. Stir in melted butter.
- Layer: Scatter apples in the dish. Pour oatmeal mixture over top.
- Bake: 35-45 mins until golden and set. Cool slightly before serving.
Notes
- Make-Ahead: Assemble and refrigerate overnight. Bake in the morning.
- Storage: Keep leftovers airtight in the fridge 3-4 days. Reheat in the microwave or oven.