Banana Bread Baked Oatmeal

$3.24 recipe / $0.54 serving
by Beth - Budget Bytes
4.88 from 87 votes
Pin RecipeJump to recipe →

This post contains some affiliate links, which means that we make a small commission off items you purchase at no additional cost to you.

This dessert-like banana bread baked oatmeal is rich, sweet, hearty, and totally breakfast worthy, thanks to hearty oats and the natural sweetness of bananas. So if you’re tired of using your brown bananas for actual banana bread, you can change things up a bit with this banana bread flavored baked oatmeal, which makes a great make-ahead breakfast meal prep for the week. BONUS: it’s freezer-friendly!

Overhead view of a casserole dish of banana bread baked oatmeal, surrounded by ingredients

What is Baked Oatmeal?

If you’re new to the world of baked oatmeal, it’s a wonderfully rich and moist breakfast treat. It’s basically oats baked into a custard. Kind of like bread pudding, but with oats instead of bread. If you think you don’t like oats because they tend to be gooey when boiled with water, try baked oatmeal. It’s soft, moist, and rich, but not at all gooey. Some people also mistakenly think baked oats are crunchy, but they’re not. 

Try these other baked oatmeal flavors: Pumpkin Pie Baked Oatmeal, Oatmeal Cookie Baked Oatmeal, or Blueberry Banana Baked Oatmeal.

How to Store the Leftovers

This recipe makes a pretty big batch, so you’ll want to save the leftovers to eat throughout the week. Make sure to refrigerate your baked oatmeal soon after cooking. I like to divide my baked oatmeal into single servings right after baking, then refrigerate them in individual containers. Once chilled, you can keep the baked oatmeal in the refrigerator for about 5 days, or freeze for about 3 months. 

How to Serve Banana Bread Baked Oatmeal

Baked oatmeal can be eaten hot OR cold. You can eat it as-is, or pour cold milk over top. And, if you like things a little sweeter, you can drizzle a little maple syrup over top.

Can I Use Steel Cut Oats?

You can not substitute steel cut oats in this recipe without making other changes because steel cut oats require a lot more moisture and a longer cooking time than rolled oats. While it may be possible to tweak it to make it work, I have not tested this method so I can not offer suggestions for that particular substitution.

Overhead view of a bowl of banana bread baked oatmeal surrounded by ingredients
Share this recipe

Banana Bread Baked Oatmeal

4.88 from 87 votes
The rich and sweet flavor of banana bread infused into a healthy baked oatmeal. This Banana Bread Baked Oatmeal is perfect for breakfast meal prep!
Overhead view of a casserole dish full of banana bread baked oatmeal, surrounded by ingredients
Servings 6
Prep 10 minutes
Cook 45 minutes
Total 55 minutes


  • 1 1/2 cups mashed banana (about 3 bananas) ($0.63)
  • 1/3 cup brown sugar ($0.12)
  • 2 large eggs ($0.46)
  • 1/2 tsp salt ($0.02)
  • 1/2 tsp vanilla extract ($0.15)
  • 1 tsp baking powder ($0.02)
  • 1/4 tsp cinnamon ($0.02)
  • 1/8 tsp nutmeg ($0.02)
  • 2 cups milk ($0.75)
  • 2 1/2 cups old-fashioned rolled oats ($0.45)
  • 1/2 cup chopped walnuts ($0.60)


  • Preheat the oven to 375ºF. Mash the bananas well with a fork (you'll need 1.5 cups).
  • Add the mashed bananas to a large bowl along with the brown sugar, eggs, salt, vanilla, baking powder, cinnamon, and nutmeg. Whisk until the ingredients are combined.
  • Add the milk and whisk until combined again.
  • Finally, stir in the rolled oats and chopped walnuts.
  • Pour the oat mixture into a 9×9-inch casserole dish and transfer to the preheated oven. Bake for 45 minutes, or until it is golden brown on top and around the edges.
  • Serve warm or refrigerate and enjoy cold!

See how we calculate recipe costs here.


Serving: 1servingCalories: 367.87kcalCarbohydrates: 54.22gProtein: 11.4gFat: 13.28gSodium: 324.97mgFiber: 5.7g
Read our full nutrition disclaimer here.
Email Me This Recipe
Get this sent to your inbox, plus get new recipes from us every week!
Please enable JavaScript in your browser to complete this form.


You might also like my Yogurt Banana Bread recipe!

How to Make Banana Bread Baked Oatmeal – Step By Step Photos

Mashed bananas in a measuring cup next to whole bananas

Preheat the oven to 375ºF. You’ll need 1.5 cups mashed bananas, which is about three bananas. I like to mash my bananas right in a liquid measuring cup so I can see the volume on the side.

Mashed bananas in a bowl with other liquid ingredients

Add the mashed bananas to a large bowl along with ⅓ cup brown sugar, 2 large eggs, ½ tsp salt, ½ tsp vanilla extract, 1 tsp baking powder, ¼ tsp cinnamon, and ⅛ tsp nutmeg. Whisk the ingredients together until they’re evenly combined.

Milk being poured into the mixing bowl

Add 2 cups milk and whisk to combine again. It’s easier to whisk in the milk after the other ingredients have been combined because it causes less splashing.

Rolled oats and chopped walnuts added to liquid ingredients

Finally, stir in 2.5 cups rolled oats and ½ cup chopped walnuts.

unbaked oats in casserole dish

Pour the oat mixture into a 9×9-inch casserole dish.

baked banana bread oatmeal in the casserole dish

Bake the oatmeal in the preheated 375ºF for 45 minutes, or until it’s golden brown on top and around the edges.

A wooden spoon scooping baked oatmeal out of the side of the casserole dish

Serve the banana bread baked oatmeal immediately, or divide into six portions and refrigerate for later!

Side view of a bowl of banana bread baked oatmeal with a spoon lifting a bite

Serve hot or cold, alone or topped with milk.

Share this recipe

Posted in: , , , , , , ,

Leave a Comment

Your email address will not be published. Required fields are marked *

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.


Leave a Comment
  1. I make this almost weekly! Also found protein oats at Costco which boost the protein. I’ve tried with a flax egg- still yummy- doesn’t fluff quite as much. I’ve added blueberries on top- delish.

    I use dark brown sugar because that’s all I seem to keep these days and I add more cinnamon because it’s good for you and yummy.

    1. I don’t think that would work well! The Instant oats would likely be very overcooked by the time everything else was ready.

  2. One of my all time favorite recipes. I always make this as soon as I have a few bananas getting overripe. Healthy, easy, and delicious!

  3. Made this recipe according to the directions and wasn’t disappointed. Absolutely delicious and a good way to use up ripe bananas! Next time I’ll try adding blueberries, raisins or dried cranberries for a little extra pizzazz!

  4. Wondering how a pre-made protein shake would do in this… Gotta boost that protein m b

    1. Hmmmm. Haven’t tried it but I would think it work fine! It’s worth a try!