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    Home » Recipes

    Oatmeal Breakfast Casserole

    Published: Jun 2, 2025 by Gloria Duggan | Homemade & Yummy 146 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Disclosure Policy.
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    Oatmeal Breakfast Casserole is a warm and delicious way to start your day.

    An easy baked oatmeal recipe packed with lots of healthy ingredients. It’s like a warm and cozy sweater for your taste buds.

    Baked oatmeal breakfast casserole with blueberries.

    Simple oatmeal breakfast bake that is wholesome and delicious. The perfect make-ahead breakfast for busy mornings. Great for brunch too.

    Breakfast is the most important meal of the day. We have all heard this for years. You can likely remember your grandmother saying it to you, I know I do.

    I love oatmeal recipes in the morning. This versatile ingredient can be used in so many creative ways. Have you tried baked chocolate strawberry oatmeal? It’s like having dessert for breakfast.

    Baked breakfast casserole in the baking dish ready to go into the oven.

    I have lots of great oatmeal breakfast ideas for you to try. Here are a few of our favourties:

    • Baked breakfast donuts are a hit with the grandkids. They always ask for them on sleepover weekends. Yes, you can eat donuts for breakfast.
    • Oatmeal pancakes are hearty and nutritious, protein-rich and so satisfying.
    • Homemade muesli cereal is so much better than store-bought. You can easily customize it just the way you like.

    If you are into overnight oatmeal, this chocolate oatmeal recipe is sure to be a hit. After all, who doesn’t want to eat chocolate in the morning?

    Speaking of overnight oatmeal recipes, this blueberry and banana oats recipe is a delicious and healthy way to start the day.

    Blueberry oatmeal casserole in the baking dish right out of the oven.

    Healthy Baked Oatmeal Ingredients

    • Old fashioned oatmeal, regular oats work well too.
    • Blueberries, either fresh or frozen.
    • Almonds, I like sliced but slivered are fine.
    • Milk, both regular and non-diary work in this recipe.
    • Maple sugar, however brown sugar or coconut sugar are great alternatives.

    You can easily swap out ingredients in this breakfast casserole. Check out the suggestions and recipe tips below.

    Baked Oatmeal Breakfast Casserole with almonds in white bowl.

    Baked Oatmeal Breakfast Casserole

    It’s as easy as 1-2-3! Full instructions are in the recipe card.

    1. Preheat the oven, and spray a baking dish.
    2. Mix all the ingredients in a large bowl.
    3. Pour into the prepared pan and bake.

    Honestly, even the kids can do this. Once baked, place in serving bowls, garnish with additional berries and milk and dig in. Store leftovers in a sealed container in the fridge.

    Suggestions / Recipe Tips

    • Dairy and non-diary milk can be used. My new favourite non-dairy milk is oat milk. Almond milk, soy or coconut would be great too.
    • Almonds can be swapped out for pecans, walnuts, pistachios, or whatever your favourite nut is.
    • Maple sugar is so delicious, but feel free to use brown sugar, coconut sugar or even maple syrup or honey.
    • Old-fashioned oats are great for any baking recipe. Regular oats are fine. Steel-cut oats will not work well in this casserole.
    • Blueberries can be fresh or frozen. You can also use apples, pears, or any other berry you like.
    Milk getting poured onto oatmeal.
    Is baked oatmeal healthy?

    Yes, baked oats are nutritious and filling. This recipe is like eating a healthy cake for breakfast.

    Can baked oats be reheated?

    This is the perfect breakfast recipe for reheating. I like to make lots so we can reheat on busy weekdays. Just pop a bowl in the microwave for a minute or so. Breakfast is ready.

    A spoon in a bowl of blueberries and oatmeal.

    Incorporating oatmeal into recipes is so easy. Give these a try:

    • No-Bake Granola Bars are perfect for lunch boxes, snacking, or eating on the run.
    • Granola Dust is a great topping for yogurt.
    • Chewy Granola Bars are soft and filled with lots of nutritious ingredients.
    • Trail Mix Bites are fun to make. These are grandkid approved.

    Of course, we cannot resist chewy oatmeal cookies, or apple muffins with oatmeal.

    Oatmeal breakfast bake.Pin
    Baked oatmeal breakfast casserole with blueberries.

    Baked Oatmeal Breakfast Casserole

    Baked Oatmeal Casserole with almonds and blueberries is a delicious way to start the day.
    5 from 53 votes
    Pin Recipe Print Rate Save To Your Recipe Box Saved!
    Course: Breakfast
    Cuisine: Canadian
    Prep Time: 10 minutes minutes
    Cook Time: 35 minutes minutes
    Total Time: 45 minutes minutes
    Servings: 6 people
    Calories: 410kcal
    Author: Gloria Duggan | Homemade & Yummy
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    Ingredients

    • 2 cups old fashioned rolled oats
    • 1 cup sliced almonds
    • 1 ½ cups blueberries (fresh or frozen) (if using frozen, partially thaw)
    • 2 cups milk (regular or non dairy)
    • ½ cup maple sugar
    • additional berries (for garnish)

    For topping:

    • ¼ cup sliced almonds
    • ¼ cup maple sugar
    US Customary – Metric

    Instructions

    • Preheat oven to 350º F.
    • Spray and 8×8 inch baking dish with cooking spray.
    • In a large bowl, combine all ingredients (except toppings) and mix well.
    • Pour into prepared baking dish.
    • Sprinkle on the toppings.
    • Bake for 35-40 minutes.
    • Remove from oven and let rest for 10 minutes.
    • Cut into squares. Place into serving bowl.
    • Serve with additional milk and fresh berries.

    Nutrition Information

    Calories: 410kcal | Carbohydrates: 54g | Protein: 12g | Fat: 18g | Saturated Fat: 3g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 10g | Trans Fat: 1g | Cholesterol: 8mg | Sodium: 45mg | Potassium: 458mg | Fiber: 5g | Sugar: 31g | Vitamin A: 134IU | Calcium: 194mg | Iron: 3mg

    Notes

    You can easily replace the oats with gluten free oats, and the milk with non dairy options. Sweeten with maple syrup or honey instead of the maple sugar. 
    This is perfect made on the weekend for brunch. Leftovers are great for easy, healthy breakfast throughout the week.
    Frozen berries can be used in place of fresh berries. 
    Tried this recipe?Take a picture and tag @homemadeandyummy
    Nutritional information on this site is generated via a plugin. I am not responsible for the accuracy of the plugin information.

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    MEET THE AUTHOR

    Gloria Duggan is the author for Homemade & Yummy, where she creates fun and easy recipes. She is also a brand ambassador/influencer for well-known companies. Gloria has judged food competitions and has posted about local food events. Gloria's work has been featured in magazines, and she has been interviewed on several podcasts. Read More…

    Reader Interactions

    Comments

    1. Sarah @ The Fit Cookie

      January 12, 2017 at 9:48 am

      Looks delicious, and I love that it’s made without eggs! We have egg allergies in our house so we get excited when we find baked recipes without them 🙂

      Reply
      • Homemade & Yummy

        January 12, 2017 at 10:03 pm

        Yes…it sort of reminds me of “dessert” for breakfast.

    2. Lea Ann (Cooking On The Ranch)

      January 12, 2017 at 9:09 am

      I am a morning person. And this looks like a perfect way to start the day.

      Reply
      • Homemade & Yummy

        January 12, 2017 at 9:39 am

        Hope you give it a try.

    3. Erin @ Stay at Home Yogi

      January 12, 2017 at 8:13 am

      Pinned this! 🙂 I love oatmeal and blueberries! This is packed with so many healthy foods and looks so yummy!

      Reply
      • Homemade & Yummy

        January 12, 2017 at 9:40 am

        Yes healthy and nutritious for sure.

    4. Corina

      January 12, 2017 at 7:28 am

      I’ve never seen this type of breakfast casserole before but it sounds delicious!

      Reply
      • Homemade & Yummy

        January 12, 2017 at 9:40 am

        That is sure is. Hope you give it a try.

    5. Jennifer

      January 11, 2017 at 11:46 pm

      I haven’t ever had a breakfast casserole with oatmeal but this looks absolutely delicious. Love it!

      Reply
      • Homemade & Yummy

        January 12, 2017 at 9:40 am

        Hope you give it a try. Makes for some tasty, easy mornings.

    6. Star Traci

      January 11, 2017 at 6:00 pm

      Well, you are living up to your blog name — this indeed looks super yummy! Add to that, the make-ahead option and I am happy, Happy, HAPPY.
      🙂
      Traci

      Reply
      • Homemade & Yummy

        January 11, 2017 at 9:12 pm

        Hope you give it a try. Thanks for stopping by.

    7. Erica

      January 11, 2017 at 3:50 pm

      I love breakfast casseroles and this one looks delicious! Nice change from all the bacon, cheese, and egg varieties. Thanks for sharing!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 9:12 pm

        Try to get a little healthier….and still have something delicious.

    8. Rebecca Bryant

      January 11, 2017 at 3:43 pm

      Oh My this looks heavenly. I love a good casserole and anything with fruit . I am making this for sure. Thank you for this wonderful recipe.

      Reply
      • Homemade & Yummy

        January 11, 2017 at 9:13 pm

        It is good…and the leftovers are awesome.

    9. Lois Alter Mark

      January 11, 2017 at 3:30 pm

      That looks delicious – and so healthy and filling. It has lots of my favorite ingredients in there!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 9:13 pm

        Hope you give it a try.

    10. Arlene Mobley

      January 11, 2017 at 3:15 pm

      I am not a big breakfast eater but this has me drooling! I can’t wait to try the recipe!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 9:13 pm

        If I don’t have to think about it….I will usually eat it.

    11. Fred

      January 11, 2017 at 2:46 pm

      This looks great Gloria, I would love, love to try this! Thanks for sharing!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 3:04 pm

        Hope you give it a try Fred.

    12. jennifer B

      January 11, 2017 at 2:27 pm

      This looks so wonderful and healthy! I love blueberries so I am going to give this recipe a try very soon!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 3:04 pm

        Hope you enjoy it as much as we do.

    13. Catherine Sargent

      January 11, 2017 at 12:04 pm

      What a yummy breakfast casserole. I am always looking for new breakfast ideas. Thanks for sharing the recipe!

      Reply
      • Homemade & Yummy

        January 11, 2017 at 2:24 pm

        You are welcome…hope you give it a try.

    14. Mandy Carter

      January 11, 2017 at 10:09 am

      THis looks so delicious. We love berries in our house and this would be a perfect combination for a filling breakfast.

      Reply
      • Homemade & Yummy

        January 11, 2017 at 11:02 am

        Any berry would would great for sure.

    15. Melissa @ My Wife Can Cook

      January 11, 2017 at 8:59 am

      Sounds like the perfect breakfast and the perfect way to start the day! It takes me a while to be fully functional in the morning.

      Reply
      • Homemade & Yummy

        January 11, 2017 at 11:02 am

        Yup…coffee has to kick in first.

      • Reesa Lewandowski

        January 11, 2017 at 10:46 pm

        Oh I love everything about this! This looks perfect for these cold winter mornings to warm me up!

      • Homemade & Yummy

        January 12, 2017 at 9:41 am

        Easy mornings are so much more enjoyable.

      • laura gillert

        September 21, 2017 at 12:26 pm

        Can this be prepared the night before? and then baked

      • Homemade & Yummy

        September 21, 2017 at 2:44 pm

        I have never tried it that way…but I don’t see why it would not work. You might want to add more liquid since it will be absorbed as it sits in the fridge overnight. If you try it, please let me know how it turns out. Sounds like a great idea.

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