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Home | Breakfast | Easy Apple Cinnamon Baked Oatmeal with Walnuts

Easy Apple Cinnamon Baked Oatmeal with Walnuts

By: Erin Indahl-Fink
Modified: March 13, 2026 - Published: August 18, 2020 - 2 Comments

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Forget the dry apple cinnamon oatmeal that comes in a cardboard box. This Apple Cinnamon Baked Oatmeal is so much better! This apple baked oatmeal recipe has no refined sugar, flour or oil, making it a wonderfully healthy breakfast option. Best of all, it tastes like apple crisp fresh out of the oven!

Baking dish with apple cinnamon baked oatmeal topped with apple slices, walnuts and sprinkle of cinnamon.

This Healthy Baked Oatmeal Recipe will be your new favorite make-ahead breakfast!

Do you or your kids love those apple cinnamon oatmeal packets, or pre-packaged breakfast bars? Throw those out – they’re loaded with tons of refined sugar and high-fructose corn syrup.

Instead, these healthy baked oatmeal bars are where it’s at! Loaded with REAL fresh apples, cinnamon and healthy rolled oats, this apple cinnamon baked oatmeal is a great make-ahead breakfast option when you’re looking for something quick.

Here are some simple tips and tricks to making this delicious Apple Cinnamon Baked Oatmeal

Ingredients for apple cinnamon baked oatmeal.

How do you make apple baked oatmeal from scratch?

This simple apple cinnamon baked oatmeal is easily made by combining old-fashioned rolled oats, cinnamon, nutmeg, salt, milk, eggs, vanilla, sweetener, chopped apples and walnuts.**

This mixture is then poured into a baking dish and baked at 350 degrees. You can then serve it warm out of the oven, or slice into bars for refrigerating or freezing for breakfast on busy mornings.

**Note: for exact ingredient amounts and full recipe instructions, please scroll down to the bottom of this post for the complete recipe. Thanks!

Mixing bowl with apple cinnamon oatmeal ingredients, diced apples, and chopped walnuts.

What type of apples can be used for apple cinnamon baked oatmeal?

Just about any variety of apple can be used in baked oatmeal. Sweet, and slightly tart varieties like Pink Lady or Honey crisp are great options. Granny Smith apples are also a good variety as they bake well, don’t become mushy and the tart flavor pairs well with the slightly sweet oatmeal.

When including apples in this recipe, be sure to peel and dice into small chunks. (As seen above.) 

What type of oatmeal should I use for baked oatmeal?

Old-Fashioned rolled oats is what is recommended for baked oatmeal. It will maintain it’s texture well and hold its shape when cut into squares or bars.

Don’t use instant oatmeal – this will quickly become mushy and not bake well. Steel cut oats can be used. If using steel cut oats, use an additional 1/4 of milk to the recipe, as it will need more liquid when baking.

Baking dish with apple cinnamon baked oatmeal topped with apple slices, walnuts and sprinkle of cinnamon.

FAQ’s about apple cinnamon baked oatmeal:

Is apple baked oatmeal good for you?

If you are making your own apple and cinnamon oatmeal, then yes, it is a healthy breakfast options! Store bought instant apple cinnamon oatmeal packets are loaded with refined sugar and are not healthy.

Is oatmeal with cinnamon healthy?

Yes, oatmeal is a whole grain which is minimally processed. Oatmeal is a great source of fiber, which will help keep you fuller, longer. Adding cinnamon is a great way to add flavor without extra calories.

What is the healthiest way to sweeten oatmeal?

There are many solid sweeteners on the market that are great for sweetening your oatmeal. Here are a few I like:

  • Lakanto Monkfruit Sweetener with Erythritol – It’s zero calories, zero net carbs, zero glycemic and a 1:1 sugar replacement. I use this in all of my overnight oats recipes: Cherry, Peach, Blueberry and Chocolate!
  • Whole Earth Stevia & Monkfruit Sweetener – very similar to the Lankanto brand, this stevia/monkfruit option is a great alternative when trying to reduce your sugar intake. It is also zero calories, net carbs and zero glycemic.
  • Swerve Brown Sugar Alternative – for those of you that enjoy brown sugar, honey or maple syrup, but don’t want all the extra calories or sugar, this Swerve Brown Sugar option is great. Also zero calories, net carbs and zero glycemic.

What can I add to oatmeal?

Mixing in fresh fruit like apples, berries, peaches, nuts and nut butter are a great way to add flavor and crunch to oatmeal. Spices like cinnamon and nutmeg are also great ways to add flavor without sugar.

Also, using a sugar alternative the ones listed above are a good way to add sweetness without the extra calories and sugar.

Another option to add to oatmeal is my Healthy Homemade Pumpkin Butter. Fantastic in oatmeal or stirred into yogurt!

Baking dish with apple cinnamon baked oatmeal topped with apple slices, walnuts and sprinkle of cinnamon.

Enjoy warm out of the oven OR refrigerate or freeze this healthy baked oatmeal for busy mornings!

Once this apple cinnamon oatmeal comes out of the oven, let cool for 10 minutes and then slice and enjoy. If you are refrigerating this baked oatmeal, store in an airtight container for up to 7 days.

Take out and reheat of a quick, healthy breakfast option.

Can baked oatmeal be frozen?

Yes! Freezing these baked oatmeal bars is a great way to meal prep healthy breakfast in advance. Place the sliced oatmeal bars into a freezer-safe container.

Separate any layers that are stacked with a sheet of parchment or waxed paper. Take out the bars when needed and defrost in the microwave for a quick, healthy breakfast.

Are you looking to make more breakfast options in advance for busy mornings? It’s a great way to go, especially when you want a healthy option, quick!

Need more make-ahead breakfast options?

Check out my post on Breakfast Meal Prep for more make-ahead breakfast meal prep recipes. These are also great recipes to start with:

  • Freezer Breakfast Sandwiches
  • Spinach Egg Bake
  • Baked Egg Cups
  • Egg and Sausage Scramble
  • Starbucks Copycat Egg White Egg Bites
Baking dish with apple cinnamon baked oatmeal topped with apple slices, walnuts and sprinkle of cinnamon.

If you loved this delicious Healthy Baked Oatmeal, check out some of my other similar recipes:

  • Healthy Baked Pumpkin Oatmeal
  • Pumpkin Slow Cooker Steel Cut Oats
  • Baked Blueberry Oatmeal
  • Chocolate Baked Oats
  • Banana Baked Oatmeal
  • Peach Overnight Oats
  • Blueberry Protein Muffins
  • 20 Best Overnight Oats Recipes

If you love an amazing Apple Cinnamon recipe, check these out:

  • Cinnamon Rolls and Apple Pie Filling
  • Microwave Apple Crisp
  • Apple Cinnamon Scones
  • Apple Cobbler with Cake Mix
  • Healthy Apple Muffins
  • Apple Cinnamon Bread
  • Healthy Apple Crumble
  • Apple Danish Braid
  • Apple Cider Cake with Caramel Cream Cheese Frosting
  • Applesauce Crumb Cake

Here’s the recipe for my apple baked oatmeal:

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Easy Apple Cinnamon Baked Oatmeal with Walnuts

Erin Indahl-Fink
Forget the store-bought apple cinnamon oatmeal – this Apple Cinnamon Baked Oatmeal is WAYYYY better! These apple oatmeal bars have no refined sugar, flour or oil, making it a wonderfully healthy breakfast option! Best of all, it tastes like apple crisp fresh outta the oven!
No ratings yet
Apple Cinnamon Baked oatmeal, cut into slices with one slice offset and topped with apple slices.
Print Recipe Remove Ads Pin Recipe
Prep Time 15 minutes mins
Cook Time 30 minutes mins
Total Time 45 minutes mins
Course Breakfast
Cuisine American
Servings 8 servings
Calories 271 kcal

Equipment

  • 9 x 9 Square Baking Dish

Ingredients
  

Dry Ingredients:

  • 3 1/2 cup old fashioned rolled oats don’t use instant
  • 1 1/2 teaspoon cinnamon
  • 1/2 teaspoon nutmeg
  • 1/4 teaspoon salt

Wet Ingredients:

  • 1 1/4 cup milk dairy or plant based
  • 2 eggs
  • 1/4 cup honey or preferred granular sweetener
  • 1 teaspoon vanilla extract
  • 2 cup apples diced and peeled, plus extra slices for topping
  • 1/2 cup walnuts chopped, plus extra for topping

Instructions
 

  • Preheat oven to 350 degrees. Lightly spray a 9×9″ baking dish or pan with non-stick baking spray. Set aside.
  • In a mixing bowl, combine the dry ingredients: oatmeal, cinnamon, nutmeg and salt. Set aside.
  • In a separate bowl, whisk together the wet ingredients: milk, eggs, vanilla, and sweetener (honey or granular sweetener.)
  • Combine the wet and dry ingredients together with a rubber scraper. Fold in the chopped apples and walnuts and combine well.
  • Pour mixture into prepared pan and spread evenly. Optional: Top with additional apple slices and walnuts.
  • Bake at 350 degrees for 30-32 minutes. Remove from oven and let cool for at least 10 minutes before slicing.

Notes

Refrigerate any leftovers in an airtight container for up to 7 days.
For Freezing: These oatmeal bars freeze well. Place in a freezer safe container, and if stacking the bars, place a layer of parchment or waxed paper between bars to prevent sticking. To defrost: place on a microwave-safe plate or bowl, and use the defrost setting for 30-45 second increments until warmed through.

Nutrition

Serving: 1gCalories: 271kcalCarbohydrates: 40gProtein: 9gFat: 9gSaturated Fat: 2gPolyunsaturated Fat: 7gCholesterol: 50mgSodium: 111mgFiber: 5gSugar: 14g
Keyword apple cinnamon baked oatmeal, healthy apple baked oatmeal, healthy baked oatmeal with apples, baked oatmeal recipe, apple cinnamon oatmeal
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Baking dish with apple cinnamon baked oatmeal topped with apple slices, walnuts and sprinkle of cinnamon.
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