Peanut Butter Oatmeal Bars
Peanut Butter Oatmeal Bars have an oatmeal cookie bar with a thin peanut butter frosting. This decadent dessert it for peanut butter lovers.
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OATMEAL PEANUT BUTTER BARS
We are on peanut butter overload over here. We go through about a jar of peanut butter every two weeks. Is that too much?
One of my favorite treats at Christmas time are these Peanut Butter Cup Cookies. These are kind of like the bar version of those with a layer of peanut butter frosting.

These bars are chewy and hearty – full of peanut butter and oats. The top is frosted with a thin layer of peanut butter frosting. If you want more…go for it.
HOW TO MAKE THESE
- Preheat oven to 350 degrees F and spray a 9×13 baking dish lightly with cooking spray.
- In a large bowl cream the butter, peanut butter and sugars. Add the egg and mix well.

- Add the flour, baking soda, salt and oatmeal and mix until well combined. Mixture will be wet. Press into prepared pan.

- Bake for 15-18 minutes, or until the edges are golden brown. Remove from the oven and let cool completely before frosting.
Frost bars.

OTHER PEANUT BUTTER DESSERTS:
- Lunch Lady Bars
- Soft Chocolate Chip Cookies
- Turtle Buckeye Brownies
- Oatmeal peanut butter cookie bars
- Cutler’s Peanut Butter Cookies
- Reese’s Peanut Butter Cupcakes
- No-Bake Cookies
- Homemade Reese’s Bars
- Monster Cookie Cheesecake Bars

Peanut Butter Oamteal Bars
Ingredients
Bars:
- 1/2 cup sugar
- 1/2 cup brown sugar
- 1/2 cup peanut butter
- 1/2 cup butter, softened
- 1 egg
- 1 cup flour
- 1 cup old-fashioned oats
- 1/2 teaspoon baking soda
- ½ teaspoon salt
Peanut Butter Frosting:
- 1/4 cup butter, softened
- 1/4 cup peanut butter
- 1 teaspoon vanilla extract
- 2-3 Tablespoons milk
- 1 1/2 cups powdered sugar
Instructions
- Preheat oven to 350 degrees F and spray a 9×13 baking dish lightly with cooking spray.
- In a large bowl cream the butter, peanut butter and sugars. Add the egg and mix well.
- Add the flour, oats, baking soda, salt and and mix until well combined. Mixture will be wet. Press into prepared pan.
- Bake for 15-18 minutes, or until the edges are golden brown. Remove from the oven and let cool completely before frosting.
- FOR THE FROSTING: Combine the butter, peanut butter, and vanilla in a medium sized bowl and beat until fluffy. Add the powdered sugar and add the milk gradually until you reach the desired consistency. You may not need it all. Frost cooled bars.




This recipe looks fabulous! Do you think I could add some chocolate chips to the dough before baking?
Absolutely!
Making these right now. So easy and I’m sure yummy! thanks
I have steel cut oats and bobs mill oat bran. Will either of these work? Can I use white wheat flour?
Yes these will work. And the wheat flour should work too.
Oh wow! I made these with coconut oil, gf oats and Pamela’s baking mix to make them gluten free/casein free and they are amazing! Also whipped up a chocolate/coconut oil icing for the topping. I really wish I could have figured out how to make them calorie free too 🙂
What a great adaption. I bet the coconut flavor is great in this.
coconut oil instead of butter???
I’m not sure because I’ve never tried it.
These look great! Can’t wait to try them!
Is it possible to use almond butter in place of the peanut butter?
I’m not sure how it would change the consistency but I would think it would work.
These look amazingly good! Can’t go wrong with peanut butter. I want some for breakfast, the oats in them would make that ok right :)?
Printed this out and on my way to the kitchen to make it!
Christy – quick oats or old-fashioned? Looks great!
Old fashioned. I’ll add that to the recipe. Thanks…
I love peanut butter and oatmeal together! These will definitely be happening in my kitchen soon!
Pinned this recipe and I’m definitely making these soon! This looks amazing!!
Oatmeal and peanut butter- two of my favorite things to bake with. I love these bars!
Christy – these bars look delicious and are right up my alley because I swear, anything that has oats AND peanut butter falls into health food for me. Also, when you are you due (sorry, I’ve lost track!)??
I’m due August 31st! So soon!!! Give me tips for 5 kids. You make it look easy…
Ha! That’s because you and I both know we can be very selective about what we post online. 🙂 Most days I’m losing my mind. My husband keeps telling me once I learn to be patient and flexible, my life will get easier. Good luck to you! Wish I was there and I’d bring you loads of dinner and watch your kids. I’m sure my boys would love to pal around with yours (and Cam would love your little girl).
I pinned these to make with my boys this week. Thanks!
I’m so glad you spotted these to share! These look so good!
old fashioned oats or quick oats?
Old fashioned…
Can natural peanut butter be used in these?
Thanks!
Yes it can!
I love how easy this recipe is. So fun!