Cinnamon Apple Baked Oatmeal

Cinnamon Apple Baked Oatmeal is an easy and delicious make ahead breakfast for the fall and winter months. Prep it the night before and bake it the next day for a relaxed morning!

Aaaah, baked oatmeal. One of my favorite make ahead breakfasts! It’s easy and delicious, it tastes like cake for breakfast and everyone in my family will gladly eat a large helping. Even my oatmeal-hating husband!

Shhh… You can also bake it right away if you’re not the planning kind 😉

This Apple Baked Oatmeal

• is extremely easy to stir up in just one bowl
• if you make a double batch you can freeze the leftovers for those extra-busy mornings
• we add a generous helping of Greek yogurt with sweetener and cinnamon, which is kind of like eating apple cake with cinnamon frosting

Ingredients you’ll need

Here is a visual overview of the ingredients in the recipe. Scroll down to the printable recipe card at the bottom of this post for quantities!

Ingredient notes

• Milk: Feel free to use any milk you like – whole, 2%, skim, non-dairy. They all work just fine.
• Oats: Don’t use quick oats, they require less liquid and will turn out mushy.
• Pecans: Feel free to use walnuts in place of the pecans, or leave them out entirely.
• Maple syrup: You can use brown sugar in place of the maple syrup if you prefer. Honey would also work.

How to make Apple Baked Oatmeal

Mix the dry ingredients in a large bowl until well combined (1).

Then add the wet ingredients to the bowl and stir very well until fully combined (2).

Next, fold in the diced apples and chopped pecans (3).

Now, transfer the mix to the prepared casserole dish. Cover and refrigerate overnight. (OR let the bake sit on the counter for 10 minutes. It will come out less cake-like, but it will still be delicious!).

Sprinkle the oatmeal with coarse sugar if you like, and bake it for around 35-40 minutes (4). Make sure to allow the casserole to cool for around 5-10 minutes before you slice it to serve!

Recipe tips

• Oatmeal cups: You can also bake this in a muffin pan for individual oatmeal muffins – baking time is around 15 minutes. Great for a portable breakfast!
• Dice the apples into bite-sized pieces. If you dice them too large, it will be annoying to eat. If you dice them too small, they will disintegrate during baking. I like dicing them into roughly ¼ inch cubes.
• Don’t overbake. It’s important you don’t overbake the oatmeal, or it will end up very dry. I’m nervous about raw egg, so I tend to overbake it – but I regret it every time because it does really dry out.

Serving ideas

We love this baked oatmeal with milk, or with a serving of Greek yogurt (drizzle with maple syrup, of course!) – it’s almost like a healthy frosting!

It’s also delicious with a side of Cinnamon Apples 🍎

More baked oatmeal recipes

PS If you try this recipe, please leave a review in the comment section and add a star rating in the recipe card – I appreciate your feedback! Follow along on Pinterest, Facebook or Instagram. Sign up for my email list, too!

Recipe first published on 09/13/2019. Updated and republished on 12/14/2020.