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Home Recipes By Dessert Type Bars & Balls

Peanut Butter Banana Oatmeal Bars

57 Reviews Recipe
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By: Erin Antoniak • Updated On June 8, 2026

Fill your kitchen with the aroma of sweet and salty peanut butter banana oatmeal bars. This will make you fall in love with baking again!

Peanut Butter Banana Oatmeal Bars

Healthy Peanut Butter Banana Oatmeal Bars

Just when you thought healthy foods meant bland, boring, or funky aftertaste, these bars come along to shake that thinking up! In fact, one bite and you’ll swear they taste way too good to be healthy for you.

Homemade peanut butter banana oatmeal bars are the best way to treat yourself to something sweet. They are made with whole, healthy ingredients (like maple syrup and whole bananas) and are the perfect way to keep you feeling full between meals.

In fact, these bars are so good for you that you can make them a part of your well-balanced lunch.

They are so high in protein and potassium that these bars also make a perfect post-workout recovery snack too. Feel free to throw in some pecans or walnuts for an added crunch!

Plus, they are fantastic for your gut health too! Oatmeal and bananas are high in dietary fiber, which is amazing for digestion and feeding healthy gut bacteria.

If you are allergic or sensitive to peanut butter, any nut butter will do! Just replace the peanut butter with sun butter or cashew butter.

Peanut Butter Banana Oatmeal Bar on plate

Ingredients Needed for Oatmeal Breakfast Bars

These healthy banana oatmeal bars are made with a base of rolled oats and peanut butter, followed up with some scrumptious cinnamon.

Here’s a bit more about what I used:

  • Bananas: Make sure the 3 bananas you use are really ripe so they are easier to completely mash.
  • Natural Peanut Butter: Add protein and salty peanut butter flavor with 1 cup of natural peanut butter. Make sure there isn’t any sneaky sugar in there. You can also sub almond butter to get the same texture!
  • Maple Syrup: To sweeten the bars naturally, add 1/4 a cup of real maple syrup.
  • Egg: You only need 1 egg to bind the ingredients together and emulsify them.
  • Vanilla: Create velvetty vanilla notes in the bars with a teaspoon of real vanilla extract.
  • Rolled Oats: 2 cups of rolled oats will fortify the bars with fiber.
  • Cinnamon: Add a little spice to the bars with a teaspoon of cinnamon.
  • Baking Powder: The teaspoon of baking powder makes the bars lighter and less dense.
  • Salt: Add a pinch (1/4 teaspoon) of salt to enhance all the other flavors.
  • Chocolate Chips: Include 3/4 cup of chocolate chips for the obvious reasons – to add more chocolate!
Photo of ingredients for Peanut Butter Banana Oatmeal Bars with labels.
Peanut Butter Banana Oatmeal Bar batter in square pan

Kitchen Tools Required

If you have ever baked sweet bread or bars before, then you probably already have all the tools you need. This is what I used when I made them.

Gather the following items before you begin:

  • 9×9 Baking Dish
  • Parchment Paper
  • Small Bowl
  • Wooden Spoon
  • Toothpick

For measuring, you will need the following sized cups and spoons: 1 cup, 3/4 cup, 1/4 cup, 1 teaspoon, and 1/4 teaspoon.

How To Make Peanut Butter Banana Oatmeal Bars

Now that you have all the ingredients and kitchen tools ready, it’s time to start baking these amazingly nutritious dessert bars!

First, preheat the oven to 350F. Don’t forget to preheat the oven, because it takes the longest. Then, grease and line a 9×9 baking pan with parchment paper and set it aside.

Next, mash the ripe bananas in a large mixing bowl. I like to mash the bananas with a potato masher for optimal smoothness. Stir in the peanut butter, maple syrup, egg, and vanilla until it is well combined.

In a small bowl, add the oats, cinnamon, baking powder, and salt.

Add the dry ingredients to the wet ingredients and stir them together until they are combined. Add in the chocolate chips and mix it all together.

Pour the batter into a greased baking dish and bake the bars for 28-30 minutes or until a toothpick inserted comes out clean.

Let cool slightly before cutting them into bars.

Step-by-step Instructions for Peanut Butter Banana Oatmeal Bars

Peanut Butter Banana Oatmeal Bars

Recipe Tips

Below are some common peanut butter oatmeal bars questions. Don’t see the answer you’re looking for? Leave a comment at the bottom of this post!

Is creamy or crunchy peanut butter best for these bars?

Whether you use creamy or crunchy peanut butter is entirely up to you and your taste buds. Do you like little bits of peanuts in your cookies or dessert bars? Then use crunchy! If you prefer sweet dessert bars that melt in your mouth, then smooth and creamy peanut butter is going to be more your speed.

How do you ripen bananas faster?

The best way to speed up the ripening process is to use a paper bag. Any size bag will do, but I like to use the small kind that people use for lunches. Place the bananas in the paper bag and close it completely.

Keep the bananas in the bag for a day or two. They should soften and ripen up very quickly.

Can I make them into cookies?

Yes, you can easily turn these bars into cookies – the only difference will be the cooking times. Cookies bake faster than bars. I would cut the baking time down to about 10-15 minutes and check them for doneness.

How do you know when peanut butter banana oatmeal bars are fully cooked?

I use a toothpick to check to see if the bars are fully baked. Insert a toothpick into the middle of the bars. If it comes out clean, then they are ready to be pulled out. If there is still batter on the toothpick, let it bake for about 5-10 more minutes.

Is maple syrup healthier than table sugar?

The reason maple syrup is considered healthier than granulated sugar is because it has a lower glycemic index. It isn’t a 1:1 replacement either because maple syrup is sweeter than white sugar. You’ll use less maple syrup than you would sugar, so you’ll consume fewer calories.

Are these oatmeal bars gluten-free?

Yes, these banana oatmeal bars are gluten-free. I did not use any kind of flour in them at all. You can also make them vegan by substituting a flax egg.

Peanut Butter Banana Oatmeal Bars stacked on plate

Storing leftovers

Store leftover peanut butter oatmeal bars in an airtight container, like a resealable pyrex dish, at room temperature. They will last about a week – if you don’t eat them all first!

These cookies will stay fresh in the freezer for up to 6 months.

If you liked this recipe, you’ll want to try these!

Here are some more of my favorite sweet bars to make. Enjoy!

  • Peanut Butter Rice Krispies Bars With Pretzels
  • Healthy Cherry Pie Oatmeal Bars
  • Peanut Butter Energy Bars
  • Healthy Peanut Butter and Jelly Bars
  • Healthy Cookie Dough Bars

Recipe by Erin Antoniak and Photos by Bake and Bacon

Peanut Butter Banana Oatmeal Bar on plate
Peanut Butter Banana Oatmeal Bars
5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 57 reviews

Banana Peanut Butter Oat Bars

Fill your kitchen with the aroma of sweet and salty peanut butter banana oatmeal bars. This will make you fall in love with baking again!

Prep: 10 Cook: 30 Total: 40 minutes
Yield 12 bars 1x
Scale
Print Pin it Rate

Ingredients

  • 3 ripe bananas, mashed
  • 1 cup natural peanut butter
  • 1/4 cup maple syrup
  • 1 egg
  • 1 tsp vanilla
  • 2 cups rolled oats
  • 1 tsp cinnamon
  • 1 tsp baking powder
  • 1/4 tsp salt
  • 3/4 cup chocolate chips

Instructions

  1. Preheat oven to 350F and grease and line with parchment paper a 9×9 baking dish.
  2. In a large bowl, mash bananas. Stir in peanut butter, maple syrup, egg and vanilla until well combined.
  3. In a small bowl, add oats, cinnamon, baking powder, and salt.
  4. Add dry ingredients to wet and stir until combined. Add in chocolate chips and mix.
  5. Pour into greased baking dish and bake for 28-30 minutes or until toothpick inserted comes out clean.
  6. Let cool before slightly before cutting into.
Author: Erin Antoniak Category: breakfast, gluten-free, dairy-free, snack Method: oven Cuisine: American Diet: Gluten Free
Peanut Butter Banana Oatmeal Bars

Did you make this?

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  1. Dana says

    Posted on 3/22 at 7:27 pm

    Yum! These are delicious! Just like a cake but in bar form. I used dried currants instead of chocolate chips for more of a “breakfasty” feel and liked it!

    Reply
    • Erin says

      Posted on 3/23 at 3:03 pm

      Hi Dana, so happy you loved them!

      Reply
  2. Erin N says

    Posted on 3/22 at 6:25 pm

    Made these last night and I cannot handle the deliciousness! The taste and the texture. They remind me of peanut butter chocolate no bake cookies, or puppy chow. SO GOOD!!!

    Reply
    • Erin says

      Posted on 3/23 at 3:03 pm

      Hi Erin, so happy you loved them so much!! 🙂

      Reply
  3. Kelly says

    Posted on 3/22 at 12:08 am

    Delicious & filling. I accident used a loaf pan & it came out perfect. I’m still super obsessed with the chickpea brownies recipe & the Cesaer salad dressing. Thank-you for another fabulous recipe Erin!

    Reply
    • Erin says

      Posted on 3/22 at 5:36 pm

      Hi Kelly, so happy you loved them!!

      Reply
  4. Yasmeen says

    Posted on 3/21 at 9:42 pm

    Hi! I’m so excited to make these! I’ve been waiting for the recipe to be posted since you showed a video of making these awhile ago. Sadly, I only have an 8×8 pan (and now 9×9). Do I need to increase the cooking temp or baking time if using a 9×9? Thanks and can’t wait to make these soon!!!

    Reply
    • Yasmeen says

      Posted on 3/21 at 9:44 pm

      So I just noticed the typo.. sorry! Do I need to increase the cooking or baking time if using a 8×8 pan (I don’t have a 9×9 pan). Thanks!

      Reply
    • Erin says

      Posted on 3/22 at 5:34 pm

      Hi Yasmeen, that’s ok! It should be fine. Just check them out and double check they’re fully cooked in the center and maybe leave them in a couple minutes more/when fully cooked. It isn’t that big of a deal!

      Reply
  5. Kelly says

    Posted on 3/21 at 3:26 pm

    I made these yesterday and they are DELICIOUS! Thank you!!

    Reply
    • Erin says

      Posted on 3/21 at 5:30 pm

      Hi Kelly, happy you enjoyed them! 🙂

      Reply
  6. Kelly says

    Posted on 3/21 at 3:25 pm

    I made these yesterday and they are DELICIOUS! Thank you!!

    Reply
    • Erin says

      Posted on 3/21 at 5:30 pm

      Hi Kelly, so glad you loved them!!

      Reply
  7. Kayla Ryan says

    Posted on 3/21 at 1:11 pm

    Will leave your house smelling like love all day long 🥰🤣. Super simple recipe and packed with protein. Perfect post workout snack. So delicious! Thanks Erin!

    Reply
    • Erin says

      Posted on 3/21 at 5:27 pm

      Hi Kayla, so glad you loved them!!

      Reply
  8. Nancy B. says

    Posted on 3/21 at 12:04 pm

    Loved these bars. So easy to make. Great for a quick grab and go breakfast.

    Reply
    • Erin says

      Posted on 3/21 at 5:22 pm

      Hi Nancy, so glad you liked them!

      Reply
  9. Becca says

    Posted on 3/21 at 10:05 am

    I feel like I’ve made 100 variations of PB/oats/chocolate breakfast bars/muffins, but these are at the top of the list! The banana makes them so moist. So so good!

    Reply
    • Erin says

      Posted on 3/21 at 5:22 pm

      Hi Becca, so glad you loved them!!

      Reply
  10. Nicole says

    Posted on 3/21 at 9:22 am

    These are fantastic! First made these two days ago and have already made a second batch because they were that good!

    Reply
    • Erin says

      Posted on 3/21 at 5:22 pm

      Hi Nicole, so glad you loved them so much! 🙂

      Reply
  11. Leann says

    Posted on 3/20 at 9:40 pm

    So good! Super simple to toss together and my littles LOVED them! My five year old claimed it was the “tastiest treat ever!” 🙂

    Reply
    • Erin says

      Posted on 3/21 at 5:15 pm

      Hi Leann, so happy you all loved them!!

      Reply
  12. Nicole Ford says

    Posted on 3/20 at 8:18 pm

    Seriously so good. Such a great and easy breakfast. Have yet to try a recipe from Erin than I don’t absolutely love!

    Reply
    • Erin says

      Posted on 3/21 at 2:08 pm

      Hi Nicole, so glad you loved them! 🙂

      Reply
  13. Taylor says

    Posted on 3/20 at 3:49 pm

    I make a lot of banana bread for my kids so I was really excited to try something new with bananas. They are delicious and are perfect for packing in school lunches! Another recipe win!

    Reply
    • Erin says

      Posted on 3/21 at 2:02 pm

      Hi Taylor, so glad you all enjoyed them!!

      Reply
  14. Lindsay says

    Posted on 3/20 at 1:51 pm

    Made these into cookies, sooooo good !!!

    Reply
    • Erin says

      Posted on 3/21 at 1:56 pm

      Hi Lindsay, so glad you loved them!!

      Reply
  15. LeAnne Dunham says

    Posted on 3/20 at 10:14 am

    Made these for breakfast for my little kids…the whole family enjoyed them and it made for happy kids in the morning 🙌! Super easy recipe, affordable, and delicious!

    Reply
    • Erin says

      Posted on 3/21 at 1:49 pm

      Hi LeAnne, so happy everyone loved them!

      Reply
  16. Susan says

    Posted on 3/19 at 8:05 am

    Absolutely loved these. I have tried making a few healthy oat bars from other blogs and never really loved them, but these are outstanding. Thanks for such a great recipe ❤️

    Reply
    • Erin says

      Posted on 3/21 at 1:18 pm

      Hi Susan, so happy you loved them so much!!

      Reply
  17. jill parmer says

    Posted on 3/17 at 11:58 am

    I accidently thawed a bunch of frozen bananas, so i decided to give this recipe a try. It was super simple to put together and doubling it worked beautifully. So delicious!

    Reply
    • Erin says

      Posted on 3/17 at 2:53 pm

      Hi Jill, so happy you enjoyed them!!

      Reply
  18. Kerry says

    Posted on 3/17 at 9:31 am

    These are delicious! Healthy, easy to make and I always have the ingredients on hand!

    Reply
    • Erin says

      Posted on 3/17 at 2:53 pm

      Hi Kerry, so glad you loved them!!

      Reply
  19. Georgeann says

    Posted on 3/16 at 4:55 pm

    I was so excited for this recipe to be posted! So simple and pure heaven!

    Reply
    • Erin says

      Posted on 3/17 at 2:51 pm

      Hi Georgeann, so happy you loved them!!

      Reply
  20. Kylie R says

    Posted on 3/16 at 10:27 am

    Can’t wait to try!!! I can tell they are going to be amazing

    Reply
    • Erin says

      Posted on 3/17 at 2:49 pm

      Hi Kylie, so glad you loved them!!

      Reply
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I’m Erin. Creator of Erin Lives Whole, a food blog with delicious and easy healthy recipes that will leave you feeling good. We’ve got everything from wholesome baked goods to comforting savory dishes. I can’t wait to see what you whip up! Read More...

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Banana Peanut Butter Oat Bars
Banana Peanut Butter Oat Bars
Peanut Butter Banana Oatmeal Bars
Peanut Butter Banana Oatmeal Bars