Apple Cinnamon Baked Oatmeal (Easy & High Protein)

ByChelsea Updated
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This Apple Cinnamon Baked Oatmeal is the cozy breakfast your mornings have been missing — warm, nourishing, and naturally sweetened with real apples and maple syrup. It’s the perfect make-ahead meal for busy families who still crave a homemade start to the day.

Oatmeal plated on a white plate with the glass pan of baked oatmeal next to it on top of a cutting board with 3 apples and a plaid napkin surrounding

The cool weather inspires me to bring more warmth into our mornings, and apples are one of my favorite ways to do it. This apple cinnamon baked oatmeal came from wanting a nourishing, make-ahead breakfast that feels like a taste of fall in every bite. I always try to keep my ingredients simple and nourishing and this recipe hits all of the marks. The slight crunch of the apples and the texture of the oats is such a rich combination. It has been on repeat for a quick make-ahead breakfast in our home this Fall.

Why You’ll Love this Recipe

  • Protein-packed: Greek yogurt gives it an extra boost of protein.
  • Family-friendly: Even little ones love the apple-cinnamon flavor.
  • Meal-prep ready: Bake once, and breakfast is ready for a few days.
  • Naturally sweetened: No refined sugar — just apples and maple syrup.

Ingredients Breakdown

An overhead view of the ingredients needed to make the recipe: oats, milk, apples, maple syrup, pecans, vanilla, cinnamon, Greek yogurt, eggs, salt and baking powder.
  • Oats – The hearty base that gives baked oatmeal its chewy, satisfying texture.
  • Cinnamon – Adds that cozy, warm flavor that makes this recipe taste like fall.
  • Baking powder – Helps the oatmeal rise slightly and keeps it from feeling too dense.
  • Salt – Balances out the sweetness and brings the flavors to life.
  • Milk – Keeps the oatmeal moist and creamy!
  • Greek yogurt – Adds protein, creaminess, and a little tang while keeping it light.
  • Eggs – Bind everything together and add a boost of protein.
  • Maple syrup or honey – Natural sweetness that pairs perfectly with apples and cinnamon.
  • Vanilla extract – Adds depth and warmth to the flavor.
  • Apples – Juicy bites of natural sweetness in every forkful.
  • Walnuts or pecans (optional) – Adds crunch and healthy fats that make it extra satisfying.

How to Make the Best Apple Cinnamon Baked Oatmeal

Please see recipe card at the bottom of this post for the full recipe details.

  1. Preheat your oven to 350°F (175°C). Grease an 8×8 or 9×9 baking dish.
  2. Mix the oats, cinnamon, baking powder, and salt in a large bowl.
  3. In another bowl mix the milk, Greek yogurt, eggs, maple syrup, and vanilla until smooth
  4. Combine the wet and dry ingredients.
  5. Fold in the diced apples and nuts if using.
  6. Spread the Ingredients evenly into your prepared pan.
  7. Bake the oatmeal for 35–40 minutes, until golden and set in the center.
  8. Cool a little before slicing. Serve warm with a drizzle of maple syrup, a spoonful of Greek yogurt, or a splash of milk.

Recipe Tips

Add a pinch of nutmeg for even more cozy fall flavor.

Use certified gluten-free oats if needed. These are my favorite.

Swap apples for pears in winter or peaches in summer. This recipe is great for every season.

To make it dairy-free, use coconut yogurt and almond milk.

Make-Ahead & Storage

This baked oatmeal is perfect for meal prep!

  • Refrigerate: Store slices in an airtight container for up to 5 days.
  • Freeze: Wrap individual portions and freeze for up to 2 months.
  • Reheat: Warm in the microwave or oven until heated through.

Tip: You can mix everything the night before, cover, and refrigerate. In the morning, just pop it in the oven while you get ready for the day.

Serving Suggestions

Oatmeal served on a white plate with a dollop of greek yogurt and maple syrup on top with a silver spoon

Serve warm with:

  • A dollop of Greek yogurt and drizzle of honey or maple syrup
  • A spoonful of nut butter
  • Fresh apple slices
  • A cozy cup of coffee or chai latte

Frequently Asked Questions

Yes! You can mix everything together the night before, cover it, and refrigerate. In the morning, just bake it fresh or reheat leftovers for a quick, cozy breakfast. It also keeps well in the fridge for up to 5 days or can be frozen for busy weeks.

I love using crisp, sweet-tart apples like Gala, Honeycrisp, Fuji, or Pink Lady. They hold their shape when baked and add the perfect natural sweetness without getting mushy.

Absolutely! Use certified gluten-free oats and swap in almond or coconut milk along with a plant-based yogurt. The texture will still be creamy and delicious — just as cozy as the original.

More Breakfast Recipes You’ll Love

Apple Cinnamon Baked Oatmeal ready to serve out of the oven in a glass dish on top of a round cutting board with apples and a plaid napkin next to it.

Apple Cinnamon Baked Oatmeal

This cozy apple cinnamon baked oatmeal is a high-protein breakfast made with Greek yogurt, maple syrup, and juicy apples. It’s simple to make, naturally sweetened, and perfect for busy mornings or slow weekends.
Print Recipe Pin Recipe
Prep Time:10 minutes
Cook Time:40 minutes
Total Time:50 minutes
Course: Breakfast
Cuisine: American
Keyword: apple cinnamon baked oatmeal, baked oatmeal with Greek yogurt, fall breakfast, healthy breakfast, high-protein oatmeal
Servings: 6 servings

Ingredients

  • 2 cups old-fashioned rolled oats
  • 1½ tsp ground cinnamon
  • ½ tsp baking powder
  • ¼ tsp salt
  • 1 cup milk of choice
  • 1 cup plain Greek yogurt
  • 2 large eggs
  • ¼ cup pure maple syrup or honey
  • 1 tsp vanilla extract
  • 2 medium apples peeled and diced
  • ⅓ cup chopped walnuts or pecans optional

Instructions

  1. Preheat oven to 350°F (175°C). Grease an 8×8 or 9×9-inch baking dish.
  2. In a large bowl, combine oats, cinnamon, baking powder, and salt.
  3. In another bowl, whisk together milk, Greek yogurt, eggs, maple syrup, and vanilla until smooth.
  4. Pour wet ingredients into dry ingredients and mix until combined.
  5. Fold in diced apples and nuts (if using).
  6. Pour into prepared baking dish and spread evenly.
  7. Bake for 35–40 minutes, until the top is golden and the center is set.
  8. Let cool slightly before slicing. Serve warm with a drizzle of maple syrup or a spoonful of Greek yogurt.

Notes

  • Use Honeycrisp, Fuji, Gala or Pink Lady apples for the best flavor and texture.
  • Store leftovers in the refrigerator for up to 5 days or freeze for up to 2 months.
  • Reheat in the oven or microwave until warmed through.
  • Make it dairy-free by using coconut yogurt and almond milk.
  • For an overnight version, mix the ingredients the night before and bake in the morning.

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