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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.






Brenda says
Nutrition Facts
6 servings/per serving: Calories 273, Total Fat 8.3g, Total Carb 43.9g, Dietary Fiber 3.7g, Protein 7.7g.
Brooke says
Thanks for sharing your recipe. I’m a fan of oatmeal for breakfast, so I usually rotate making steel cut oats, DIY instant oatmeal, baked oatmeal cups and overnight oats. I came across your recipe and it was an instant hit. This will definitely become part of my oatmeal rotation. Looking forward to trying your recipe with other fruits and add-ins!
Laura Fuentes says
I am so glad you enjoyed it! I have many recipes on here for overnight oats that I am sure you will love. 🙂
Robin says
I have made this a number of times. Super easy and very good. I like adding peaches with the blueberries.
Sierra says
I have made this recipe several times. I always double it for a 9×13 pan and I use different “extras” depending on what I have on hand. Raisins, cinnamon, and walnuts are a great way to go! Even my super picky kids love it warmed up and served with yogurt. Great texture and super filling!
Laura says
Hi Sierra! When you double the recipe, do you increase the cooking time? Thanks!
Mimi Ogletree says
Thank you so much for sharing your recipe. I am trying to clean up my eating habits, eating only “real” food, minimally processed, no refined sugar, healthy fats, and this oatmeal ticks all those boxes. I am not a big blueberry fan, but figured I could use the base and add the things I like. I made this as soon as I discovered the recipe on Pinterest, and IT IS WONDERFUL! I made it without the blueberries, and my favorite way to eat it so far is warm, with a sprinkle of unsweetened coconut, a handful of walnuts, and sliced bananas, so yummy. I encourage everyone to make this delicious oatmeal!
Laura Fuentes says
Thanks for sharing how much you loved this Mimi! Try it with frozen peaches one time and a little cream on top. OMG, so good!