This Blueberry Baked Oatmeal is the perfect healthy breakfast recipe! It’s great for weekend baking and meal prep – leftovers reheat well all week long. Made with organic gluten free rolled oats, lightly sweetened with maple syrup, bursting with blueberries.
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Looking for more healthy blueberry recipes? Be sure to check out Vegan Blueberry Scones, Blueberry Oatmeal Muffins, Blueberry Overnight Oats and Blueberry Crumb Bars.
Recipe Highlights
- An easy one-bowl recipe that comes together in 5 minutes.
- Make-ahead breakfast friendly.
- Fruity, delicious and healthy breakfast!
- Gluten-free and dairy-free friendly recipe.
Main Ingredients
This blueberry oatmeal bake is packed full of fresh fruit and healthy ingredients, many of which are probably already in your baking pantry. We will need:
- eggs – two large eggs bind the oatmeal mixture and make it light and fluffy. For best results, bring to room temperature before whisking.
- oil – feel free to use avocado oil, coconut oil or a light olive oil.
- maple syrup – for a touch of sweetness. Another liquid sweetener like honey or agave syrup will also work, or go for an equal amount of brown sugar.
- milk of choice – this could be almond milk, coconut milk, cashew milk, soy milk, oat milk or regular dairy milk. Use whatever you have on hand.
- old-fashioned oats – use certified gluten-free oats, such as Bob’s Red Mill. Steel-cut oats and quick oats create a different texture and do not work as well as regular rolled oats.
- blueberries – pick up a pint of fresh blueberries the next time you are at the grocery store. Give them a quick wash and dry just before making the baked oatmeal.
Optional Variations
- vegan – make a flax egg for even more healthy fats and to replace the two eggs in the recipe. Increase the baking powder to 1.5 teaspoons. You could also try replacing the eggs with 1/2 cup unsweetened applesauce, or if you don’t mind the extra flavor of banana, follow this Banana Baked Oatmeal Recipe.
- no oil – swap out the oil for peanut butter, almond butter or cashew butter.
- frozen blueberries – use the same quantity of frozen blueberries and do not thaw. Simply increase the baking time by a few minutes, until warm and bubbly.
- fresh lemon – add 1-2 teaspoons lemon zest or fresh lemon juice along with the wet ingredients to give the blueberries more zing.
Find the full detailed instructions with measurements in the recipe card below, at the end of this post.
How to Make Baked Blueberry Oatmeal
Baked oatmeal can be ready in less than 45 minutes.
First make sure to preheat the oven to 375ºF and grease 9×9 inch round or square baking dish (or similar size) with cooking spray. You could also line the bottom of the prepared baking dish with parchment paper.
1. Wet Ingredients: In a large mixing bowl, whisk together eggs, oil, maple syrup, milk and vanilla extract.
2. Add Dry Ingredient: Directly into the same bowl with the milk mixture, add rolled oats, baking powder, salt and cinnamon.
3. Add berries: Fold blueberries into the oatmeal mixture. Transfer to prepared baking dish. Top with walnuts, if using.
4. Bake for 35-40 minutes, or until top is golden brown and the middle is set. Serve immediately bowl style, or wait about 20 minutes to serve as squares.
Serving Suggestions
Just imagine having this delicious blueberry oatmeal recipe tucked away in your fridge to enjoy when hunger hits. Topped with a drizzle of maple syrup or honey, a few of my favorite ways to serve include:
- Breakfast: Nothing says breakfast more than baked oatmeal, and this one hits the spot every time. Enjoy with Greek yogurt for extra protein.
- Snack: Enjoy as an afternoon treat along with a cup of coffee or tea. I love to pack it in school lunches, but it makes a healthy after school snack, too.
- Dessert: Who says you can’t have oatmeal for dessert? Top a square with a scoop of vanilla ice cream and you are golden.
How to Store
Leftover blueberry oatmeal bake will keep in an airtight container in the fridge for up to 5 days. I separate the layers with a piece of parchment paper to prevent the oatmeal from getting too mushy.
Freeze: Allow to cool, then cut into oatmeal squares. Place on a parchment-lined baking sheet and freeze for 1 hour. Transfer to a freezer bag. Freeze for up to 1 month.
Reheat: Reheat individual squares in the toaster oven for 5-7 minutes, or until warmed through. Add 1-2 minutes to the bake time if reheating from frozen.
Recipe Tips & Notes:
- The size of the baking dish matters. I used a 9″ pie dish and my baking time was 35 minutes. If you use a larger baking dish, start checking after 25-30 minutes.
- Serve bowl style or squares. If you want to serve immediately, scoop the breakfast bake into bowls with a large spoon. If you would prefer to cut into squares, wait at least 20 minutes before slicing.
Recipe FAQs
Can you bake oats?
Absolutely! Baked oats have become all the rage thanks to their make-ahead friendly approach. Prep these the night before and bake it in the morning for fresh oatmeal just before everyone runs out the door.
Can I use quick oats in baked oatmeal?
Quick cooking oats do not work as well as rolled oats and will change the texture. With that said, you can try a mix of half quick oats and half old-fashioned oats. Make sure to decrease the baking time by a few minutes, too.
What are the nutritional benefits of baked oatmeal?
Oats are known to be full of vitamins, minerals, and soluble fiber. And we are getting a healthy dose of antioxidants from the fresh blueberries!
Can blueberry baked oatmeal be frozen?
Yes! Make sure the baked oatmeal is completely cool, then cut into squares. Flash freeze for 1 hour, then transfer to a freezer-safe container and freeze for up to 1 month.
Blueberry Baked Oatmeal
Ingredients
- 2 large eggs
- 2 tablespoons avocado oil, melted cooled coconut oil, or light olive oil
- ¼ cup pure maple syrup
- 1.5 cups milk of choice, i.e. almond, cashew, dairy
- 1 teaspoon vanilla extract
- 2.25 cups gluten free old-fashioned rolled oats
- 1 teaspoon baking powder
- 1/4 teaspoon fine sea salt
- ¼ teaspoon cinnamon, use more if you'd like
- 1 pint blueberries
- 1/4 cup chopped walnuts, optional
Instructions
- Preheat oven to 375ºF and grease 9×9 baking dish (or similar size).
- Whisk Wet Ingredients: In large bowl whisk together eggs, oil, maple syrup, milk and vanilla extract.
- Add Dry Ingredients: Add in rolled oats, baking powder, salt and cinnamon.
- Gently fold in blueberries and transfer to prepared baking dish. Top with walnuts if you'd like.
- Bake for 35-40 minutes or, until top is golden and middle is set. You can serve immediately bowl style, or wait about 20 minutes to serve as squares.
- Serve blueberry baked oatmeal with your favorite toppings, a little extra maple syrup or honey and enjoy!
Video
Recipe Notes:
Nutrition Information
More Baked Oatmeal Recipes You’ll Love:
This post was originally sponsored by Bob’s Red Mill in 2021. It has since been updated with more notes and helpful tips. Same original recipe!
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