Blueberry Banana Baked Oatmeal

$4.18 recipe / $0.52 serving
by Beth Moncel
4.81 from 42 votes
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Will I ever get tired of baked oatmeal? Probably not. It’s easy, cheap, deceptively filling, and I can cook it one day and then eat it throughout the rest of the week.

I love this version because I barely had to add any extra sugar thanks to the super sweet bananas. I used only 1/4 cup for the entire batch, and honestly, I probably could have cut that down to 2 Tbsp. Bananas are fantastic. The frozen blueberries were delightfully tart against the sugary bananas, which made them a perfect mate. If you’re lucky enough to have fresh blueberries, this recipe is a great way to use them up!

If you’ve got a few extra bucks, adding some nuts would be a nice texture contrast (try walnuts or almonds)!

Blueberry Banana Baked Oatmeal

Top view of a bowl of Blueberry Banana Baked Oatmeal

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Blueberry Banana Baked Oatmeal

4.81 from 42 votes
Fresh fruit and rich, custardy oats make this baked oatmeal a filling and flavorful "fix ahead" breakfast. Just heat and eat each morning!
Author: Beth Moncel
Blueberry banana oatmeal topped with fresh blueberries.
Servings 6 -8
Prep 15 minutes
Cook 45 minutes
Total 1 hour

Ingredients

  • 1.5 cups mashed bananas (about 3 bananas) ($0.75)
  • 2 large eggs ($0.50)
  • 1/4 cup white sugar ($0.04)
  • 3/4 tsp vanilla extract ($0.21)
  • 1/2 tsp salt ($0.02)
  • 3/4 tsp baking powder ($0.03)
  • 2 cups milk ($0.50)
  • 2.5 cups old fashioned oats ($0.43)
  • 8 ounces frozen blueberries ($1.70)
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Instructions 

  • Preheat your oven to 375 degrees. Mash the bananas in a measuring cup, starting with two or three and adding more until you have 1.5 cups of banana mash.
  • Combine the banana mash in the large bowl with the eggs, sugar, vanilla, salt, and baking powder. Whisk to combine. Add the milk and whisk again until smooth.
  • Stir in the dry old-fashioned oats. Lastly, stir in the frozen blueberries (keeping them frozen and stirring them in last helps prevent the entire mix from turning purple). Spray an 8×8 inch baking dish with non-stick spray and then pour in the oat mixture.
  • Bake in the preheated 375 degree oven and bake for about 45 minutes or until the top is golden brown and the center is no longer wet to the touch.

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Notes

Serve warm or refrigerate until ready to eat. These oats can be quickly reheated in the microwave each morning for a quick, filling breakfast.

Nutrition

Serving: 1ServingCalories: 305.87kcalCarbohydrates: 53.05gProtein: 9.98gFat: 6.97gSodium: 306.78mgFiber: 5.92g
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Top view of a bowl of Blueberry Banana Baked Oatmeal with whole dish of oatmeal and a cup of coffee in the background

Step By Step Photos

mashed bananas in measuring cup
Mash the bananas with a fork, starting with just a couple and adding more until you have 1.5 cups of banana mash. Try not to leave any large chunks. (last time it took me 4 medium bananas, this time only 3).

custard ingredients in mixing bowl
Add the banana mash to a bowl along with the eggs, vanilla, sugar, baking powder, and salt. Whisk until smooth.

milk added to custard ingredients in mixing bowl and whisked with whisk
Next, add the milk and whisk again. It’s a lot easier to make a smooth, cohesive mixture if you whisk the other ingredients prior to adding the milk. That’s why it’s done in two steps.

dry oats added into. mixing bowl with other ingredients
Stir in the dry oats. It’s easier to stir them in with a large spoon than a whisk, but I didn’t feel like dirtying another utensil.

package of frozen blueberries
I love having frozen blueberries on hand. They’re a great addition to many dishes, are less expensive than fresh, and keep for quite a while in the freezer. I used half a bag for this recipe (and used the rest for my smoothie packs).

oatmeal mixture poured into baking dish, ready to bake
Keep the blueberries frozen until you add them so they don’t bleed purple color throughout the oatmeal. Adding them at the very end helps this as well. Pour the blueberry oat mixture into an 8×8 inch casserole dish that has been sprayed with non-stick spray.

baked blueberry banana oatmeal in baking dish on stove top
Bake for about 45 minutes at 375 degrees or until the top is golden brown and no longer wet to the touch in the center. I baked this oatmeal at 25 degrees higher than my other baked oatmeals to compensate for the little blueberry ice cubes floating around in it. It worked out well.

Bowl of Blueberry Banana Baked Oatmeal with a cup of coffee in the background
I like to eat mine with a little bit of cold milk poured over top. This makes for a very fast, very hearty breakfast every morning of the week!

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Comments

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  1. haha, your skillet logo needs a slice of bacon underneath, to complete the smiley! :D

  2. OMG, I felt like I was eating a decadent bread pudding for breakfast! I was like “OK, where’s the bourbon/caramel sauce?” YUM! I may never eat regular oatmeal again! Thanks, Beth!

    …I ended up eating it in a bowl with cold milk (like you), just to remind myself that it was breakfast! :D

  3. I made a batch of this today just before supper and I could barely eat my supper because I kept sneaking back into the kitchen to eat another bite of this!!! I can’t wait for breakfast. The only thing I did differently was add some cinnamon to the mixture before baking. Love it! Thanks for sharing!

  4. good morning,
    i think it is growing on me :)
    will bookmark the other one and try it some other time.
    thanks for the recipe and the response.

  5. Anon – Yes, it is definitely a soft, pudding like texture. The oatmeal is basically baked in a custard mix (eggs and milk). If you like a crunchier oat cereal, maybe try this granola recipe? I hope you can still enjoy the baked oatmeal, though!

  6. Since we dont use the measure “cup” over here in europe and i am not really familiar with baked oatmeals i am uncertain if i got the recipe right. how should the consistence be? when i saw the pictures i imagined it would be kind of crunchy, like those cereals one can buy but my first try is more soft or mushy almost like a pudding (it wasnt wet to the touch anymore :P).
    still “eatable” but not the way i imagined it when i saw your pictures…

  7. I just made this and it was amazing! I used coconut milk in place of regular (we have a dairy allergy in the house) and it tastes heavenly…thanks so much for the recipe!! I have a feeling it will be made over and over again.

  8. I absolutely love your baked oatmeal recipes. I turned your banana nut bread into a fall harvest bread with apples, cranberries and walnuts! Keep them coming!

  9. I can’t wait to try this recipe. Has anyone made it with quick oats or instant oats? If so, did it require any changes?

  10. Just came across your site today and I’m loving it! I’m a vegan so I will make some adjustments, but all the veggie stuff looks amazing. I think I might try pureed applesauce with extra baking power in place of the egg for this one. It’s what i do for muffins and cupcakes.

  11. For the Flax egg, you use 1tbsp per 3 tbsp of water, mix it together, and refrigerate it for at least 15 minutes before adding it to something! I did it with the apple flax muffins and it turned out great!

    This looks amazing!

  12. Wow, this is fantastic! I will definately be making this again and again. I was so happy I saved those awful looking bananas. Much better than making banana bread with them!
    Thank you.

  13. Just finished inhaling two bowls of this awesome breakfast, we loved it! I made baked oatmeal years ago and it was a dry, gross mess and I’m so glad I tried it again. I can see us having different variations of this every weekend. I used fresh blueberries and a little dash of cinnamon.