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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.






Sarah says
I’ve always wanted to try baked oatmeal & this was the first recipe I tried. I was in a hurry last night so I forgot the milk until halfway through the baking time…. But I added it and thankfully is still cooked. Made it last night so I could take it to work this morning. The flavor is SO GOOD!!!!!! & the texture is just right. How have I not done this before?! I will be making this recipe again & again! Thanks for sharing!
Laura Fuentes says
I”m so glad it was a success Sarah!
Maria says
So, I followed the recipe exactly and it was watery not a thick batter like you mentioned and cooking time was almost doubled
Helen says
Yes mine was also watery.
Laura Fuentes says
did you use old fashion oats or quick oats? this is meant to be used with old fashion oats.
Elisha says
Hi Laura,
Could I make this dairy free? I was thinking of using cocounut milk and earth balance butter so my daughter could enjoy it. Also, could I use raspberries or strawberries instead of blueberries?
Laura Fuentes says
Absolutely! That will work!
Elisha says
Thanks Laura!
Debbie says
How much honey is used?
Stephanie Schneller says
Debbie, the recipe calls for 1/3 cup.
Debbie says
When I look at this recipe, the amount of honey called for does not show up. How much honey do you use?
Also, can you make this a day ahead of time and warm it up in the morning?
Laura Fuentes says
the recipe calls for 1/3 cup.
Evelyn says
What is the calorie content?
Laura Fuentes says
Evelyn, I do not calculate calories in my recipes. I focus on using fresh and real ingredients instead. You are welcome to plug the ingredients into a calorie calculator. Enjoy!