This post may contain affiliate links. Read our disclosure policy here.
This blueberry baked oatmeal comes out soft, warm, and packed with sweet blueberries in every bite.

Baked Oatmeal with Blueberries
Making overnight oats is one of the easiest ways to prep breakfast ahead, but nothing beats a warm bowl of oatmeal. On weekends, when I have a little extra time, this baked oatmeal with blueberries is my go-to. It takes minutes to prep, the oven does the cooking, and the result is a soft, hearty bake with sweet blueberries in every bite.
Why It’s Good For You
This blueberry baked oatmeal has fiber and complex carbs from the oats that keep you fuller for longer, and the blueberries naturally sweeten it and add fiber, vitamins, and antioxidants.
Ingredients
Old-fashioned oats hold out best for baked oatmeal recipes. A little baking powder gives these a lighter texture, and a little salt for flavor. Milk, dairy or non-dairy, is the liquid in which the oats will cook; an egg holds them together, a little butter and vanilla for flavor, and a little honey is optional for a touch of sweetness.
How to Make Blueberry Baked Oatmeal
In the recipe card, you’ll find full directions and a short video showing you how the recipe is made. Here is what you need to know:
- Make the oatmeal mixture.
In a large bowl, combine all the liquid ingredients. Then add the dry ingredients and mix. At the end, fold in the blueberries. - Bake it.
Lightly spray the baking dish, then pour the blueberry oat mixture. Bake it until the top is golden and the middle is set, for about 35 minutes. - Serve it.
Give it a few minutes to cool, then spoon it into a bowl and top with a drizzle of milk, some yogurt for added protein, or your favorite oatmeal toppings.

Bake ahead
Prepare as directed, let cool to room temp, then cover and refrigerate overnight. Reheat at 375F for 10 minutes or microwave a portion for 1-2 minutes. Leftovers keep in the fridge for up to 4 days.
More Baked Oatmeal Recipes
Make these and come back for this pumpkin baked oatmeal, or this cranberry orange baked oats. Oatmeal Recipe never disappoints!
Blueberry Baked Oatmeal

Watch how it’s made:
Ingredients
- 2 cups rolled oats
- 1 teaspoon baking powder
- ½ teaspoon salt
- ¼ cup honey or maple syrup, optionanl
- 2 cups milk, any
- 1 large egg
- 2 tablespoons butter, melted
- 2 teaspoons vanilla
- 1 ½ cups blueberries, fresh or frozen
Instructions
Prep:
- Preheat the oven to 375F, with the top rack in the middle position, and grease a 9 x 9-inch square baking dish.
- In a large bowl, combine the milk, egg, honey, melted butter, and vanilla. Add the dry ingredients to the bowl, and mix well. Add the blueberries to the bowl, and gently fold to combine. If using frozen blueberries, there's no need to thaw.
- Pour the mixture into the baking dish. With a spoon, stir to evenly distribute the blueberries in the dish.
Bake:
- Bake it in the preheated oven for 35 minutes, until the top is golden and the oat mixture is set in the middle. Remove it from the oven and let it cool down slightly before serving.
Serve & store:
- Spoon the baked oatmeal with blueberries into bowls. Pour a little extra milk or spoon yogurt over the top for added protein, or enjoy as is.
- Cooled leftovers will keep in the fridge (covered) for up to 4 days. To reheat, warm them in the microwave with a little liquid (milk or water) to soften, for 30 seconds to 1 minute.






Nikki C says
Made this today with Apple, pear, peach cinnamon, nutmeg and maple syrup instead of honey. It was delicious! Thank you!
Laura Fuentes says
That combo sounds delicious. Thanks for sharing, Nikki!
Cherie Duphorne says
Hi Laura! I’m wondering if I could use steel cut oats in this recipe instead of rolled oats, and if so do I need to make any adjustments to the other ingredients (more or less milk?) or to the time and temperature?
Laura Fuentes says
Hi Cherie, you can absolutely use steel-cut oats for this recipe. However, for every cup of oats, you’ll need 4 cups of liquid. And, the baking time will increase to 45-50 minutes. I also recommend you stir them half way through. Enjoy!
Whitney says
Love this recipe! It was a hit with my husband and brother-in-law, both are very picky eaters. I made a few modifications by adding a mashed banana and I used 1 cup of plant milk instead of 2. I wanted it to be a little sweeter.
Laura Fuentes says
I bet the mashed banana added sweetness! Great add-in!
Joy says
I’ve looked everywhere in this recipe and I don’t see oven temperature. I used 350 but not done! Still runny!
Laura Fuentes says
The recipe card at the end of the post states 375 degrees F. At 350, you’ll need a longer cooking time.
Sarah says
Can I substitute milk with almond milk? Thanks!
Laura Fuentes says
Absolutely, Sarah. You can substitute milk for almond milk in this blueberry baked oatmeal recipe. Enjoy!
Karen Gimas says
Hi everyone! Does anyone have an idea for a honey substitute? I will be feeding this to a 9 month old who can’t have honey yet. TIA
Laura Fuentes says
You can use maple syrup. Enjoy!