Peanut Butter Oatmeal Bars

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Make these peanut butter oatmeal bars in minutes, and with basic pantry ingredients. They are crunchy around the edges, and so soft in the middle. Perfect!

stack of peanut butter oatmeal bars 2022

When my kids were growing up, the best time of the day for me was when they arrived home from school. Like most families, we had a routine. I’d look in their book bags, take care of their lunch boxes, and then we would have something to eat. I wish I had known about these peanut butter oatmeal bars back then, because they are the perfect after-school snack. They’re very quick, super easy, and kids love them!

peanut butter oatmeal bars ingredients 2022

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Ingredients

  • Butter: makes these bars so moist and boosts flavor.
  • White Sugar: adds the perfect amount of sweetness.
  • Brown Sugar: adds a bit of richness and texture.
  • Vanilla: enhances all the flavors. Use pure vanilla extract or vanilla bean paste.
  • Egg: a necessary binder.
  • Peanut Butter: what kind you use is totally a personal choice. Use your favorite brand, creamy or chunky.
  • Oatmeal: make sure to use old fashioned oats and not instant. Do not use rolled oats.
  • Flour: holds all the ingredients together and produces the batter.
  • Baking Soda: puffs up the bars.
  • Salt: helps with moistness and balance.
peanut butter oatmeal batter in bowl 2022

How To Make

  • Preheat oven to 350 degrees F.
  • In a large mixing bowl, with an electric mixer, or in the bowl of a stand mixer, combine butter, white sugar, brown sugar, vanilla, egg, and peanut butter.
  • In a separate bowl, whisk together oatmeal, flour, baking soda, and salt.
  • Add dry ingredients (the oat mixture) to the butter/sugar mixture, making sure to scrape the sides.
  • Put batter in 8 x 8 inch prepared pan. Spread to the sides.
  • Bake 25 min.
  • Optional: Immediately after removing from oven, sprinkle with chocolate chips.
batter for peanut butter oatmeal bars 2022

Variations

I bet if you walked in your kitchen right now you would have everything you need to whip up these tasty bars. This peanut butter oatmeal bars recipe uses very basic ingredients with no surprises. (My kind of recipe!)

  • Substitute half of the all-purpose flour with whole wheat flour for a healthier version.
  • Swap out the all-purpose flour with almond flour for a delicious gluten-free dessert. (Make sure to use oatmeal and peanut butter brands that are specifically labeled “gluten-free.”)
  • It will alter the taste a little bit, but an equal amount of maple syrup or honey can be substituted for the brown sugar.
  • For a lower fat version, replace half of the butter with unsweetened applesauce.
  • Instead of sprinkling chocolate chips on top of the baked bars, melt them first in the microwave and drizzle the chocolate.
  • Delicious substitutes for the semi-sweet chocolate chip topping are butterscotch chips or sea salt caramel chips.
square pan not baked peanut butter oatmeal bars 2022

The best thing about these bars is that in the middle, they are moist and chewy, but along the edges, they are crisp and crunchy. If stored in an airtight container at room temperature, these peanut butter oatmeal bars will keep for up to three days. I can pretty much guarantee that they won’t last that long!

square pan baked peanut butter oatmeal bars 2022

How To Freeze

Cut the completely cooled bars into whatever size you prefer. Layer them in between parchment or wax paper. Use a resealable freezer bag or a freezer safe container, and place them in the freezer. Don’t forget to mark the date. The bars will keep in the freezer for up to 2 months.

peanut butter oatmeal bars on cooling rack 2022

More Tips

  • Make sure to prepare your baking dish with cooking spray, or line the bottom with parchment paper. I always use Baker’s Joy and it works beautifully.
  • Spread the peanut butter oatmeal batter to the sides of the pan, in an even layer.
  • Other interesting add-ins: raisins, dried cranberries, peanuts, or shredded coconut.
  • This recipe can be doubled and baked in a 9 x 13 inch pan.

What Readers Are Saying

“Thanks for this recipe. I made a pan yesterday and they are fantastic – they’re chewy and delicious. They taste like they’re good for you due to the oatmeal. Definitely a keeper that I will make again and again.”

~Jeannine

stack of peanut butter oatmeal bars 2022

Peanut Butter Oatmeal Bars

Make these peanut butter oatmeal bars in minutes with basic pantry ingredients. They are crunchy around the edges, and so soft in the middle.
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4.88 from 25 votes
Servings: 9 bars
Author: Ann Drake
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
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Ingredients

  • 1/2 cup butter (softened)
  • 1/2 cup brown sugar
  • 1/2 cup white sugar
  • 1 teaspoon vanilla
  • 1 egg
  • 1/3 cup peanut butter
  • 1 cup oatmeal
  • 1 cup flour
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt omit if you use salted butter

Instructions

  • Preheat oven to 350 degrees F.
  • In a large mixing bowl, with an electric mixer, combine butter, white sugar, brown sugar, vanilla, egg, and peanut butter.
  • In a separate bowl, whisk together oatmeal, flour, baking soda, and salt.
  • Add dry ingredients (the oat mixture) to the butter/sugar mixture, making sure to scrape the sides.
  • Put batter in 8 x 8 prepared pan. Spread to the sides.
  • Bake 25 min.
  • Optional: Immediately after removing from oven, sprinkle with chocolate chips.

Notes

I prepare my baking pans with Baker’s Joy.

Nutrition

Serving: 1 bar | Calories: 295kcal | Carbohydrates: 39g | Protein: 5g | Fat: 16g | Saturated Fat: 8g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 45mg | Sodium: 271mg | Potassium: 122mg | Fiber: 1g | Sugar: 24g | Vitamin A: 342IU | Calcium: 25mg | Iron: 1mg
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If you make this recipe, and love it, please come back to leave a comment and a 5-star review. I would really appreciate it, and it would help me so much. Thank you

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4.88 from 25 votes (11 ratings without comment)

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Recipe Rating




46 Comments

  1. Ann, I know we will love this! Have you ever tried putting the chocolate chips in the mix before baking? Just wondering if that would work…thanks for all your wonderful recipes.

  2. 5 stars
    Whipped up in minutes. This was easy. And an A++ Yummy recipe. Definitely will make again and again. This is going into the Gann recipe box. Love you Ann!

  3. I immediately printed the recipe. You’re right, I have all the ingredients already. I plan to bake them tomorrow. I’ll leave a recipe rating after. They look delicious. Thank you for sharing.
    Karen B.

  4. MARY-ANN (FROM CANADA!) says:

    Another great recipe! Thanks, Ann, for sharing with us!

  5. Mickey R. says:

    5 stars
    I added some peanut butter chips & milk chocolate chips to the batter. Yum!!!

    1. Ann Drake says:

      Thank you for the rating!

  6. Paula Gunnell says:

    Would the recipe be okay if I double it? Would a 9×13 inch pan work? How long would I bake it?
    Thank you!

    1. Ann Drake says:

      Hi Paula…yes it works great to double the recipe and bake in a 9×13. Start with 30 minutes and then add time in 5 minute increments until the bars are done. I’m not totally sure how long they will take so this would be the safest method. Enjoy!

  7. I can’t wait to try this! If it is as good as your blueberry coffee cake it will be a hit. Thank you

  8. Jacquelyn says:

    5 stars
    Yummy!!! I will definitely be making this again!! Thanks for the great recipe!

    1. Ann Drake says:

      Thank you for the rating!

  9. 5 stars
    These bars were excellent! So easy to whip together for a quick dessert. Thank you!!

  10. Nuraan Williams says:

    5 stars
    Loved this so much. Definitely going to be a regular in my home. Thank you

    1. Ann Drake says:

      Thank you for your comment and the rating. I really appreciate it!

  11. 5 stars
    Made these bars last week. Love them. The only change I made was after taking them out of the oven, I covered the top with milk chocolate chips, let them melt, them spread it around like a frosting. Delicious!

  12. 5 stars
    Easy and delicious. We enjoyed!!

  13. Sue Ellen Curtis says:

    I made these and they were a HIT!
    Thank you for the recipe.
    Sue Ellen

  14. Deanne Wood says:

    Super good. Thank you for this recipe.

  15. 5 stars
    Look really good! Will definitely be making this

  16. The recipe makes me drool! Yummy, thanks for sharing.

  17. Already have plans to make these for a family get together next week – thanks for sharing the recipe!

  18. Tammy K. Watson says:

    5 stars
    Your recipe for the peanut butter oatmeal bars sounds yummy! I’m going to make them tomorrow!! Thank you for the recipe!!

  19. Lisa Cress says:

    I love anything peanut butter and these bars look amazing! Thank you for sharing!

  20. Pamela Smith says:

    These look so yummy! I’ve already printed out the recipe and can’t wait to try them! Love your blog and your style!

  21. Carol Kindt says:

    I love it when there’s a recipe using things I already have in the pantry. This peanut butter bar is going to be a hit with my hubby.

  22. Mary Lynn Redmond says:

    These look like a perfect summer treat!

  23. These sound yummy. I will have to try them for a quick tasty out the door breakfast bar.

  24. These look fabulously yummy! Thank you for sharing this recipe.

  25. D. Ingram says:

    My first time on this site and wow I am a winner already. I needed a dessert recipe to take to a July 4th celebration….. This bar recipe will be perfect!!! Can’t wait to make it for the family….. Thank you Ann

  26. 5 stars
    You just can’t go wrong with peanut butter and oatmeal! Can’t wait to try your recipe Ann.

  27. 5 stars
    Thanks, Ann, for the recipe – my “grands” loved them!

  28. Susan McKim says:

    You always share such yummy recipes! Definitely going to try this one!

  29. Kimberly Bruns says:

    These Oatmeal Peanut Butter Bars are awesome!! I have made them twice already.

  30. Lori Geiger says:

    5 stars
    Thanks for the gluten free version! These look so yummy!

  31. Betty Wimmer says:

    I just made the bars……delicious…..thanks for sharing the recipe 💐

    1. Ann Drake says:

      Yay! I’m so glad you liked them. XO

  32. Mary Nell says:

    5 stars
    Big hit!! Thank you.

  33. Made these today planning to take them to a party this evening. When my husband tasted them, he told me, “Don’t take them; they probably wouldn’t like them,” as he was licking both his lips and his fingers!

  34. Carol Kindt says:

    5 stars
    Yummmmy, I DO have all the ingredients in my pantry and am going to make these this week for sure. Thank you for sharing the recipe.

  35. Always inspired by your simple approach to cooking, decorating and life in general. We all need easy and more relaxed approach to everything these days. Blessings to you for all the ideas you share!

  36. I’ve made these twice now and they were a big hit both times. And so easy too. Thank you!

  37. Made these for the grands today and they LOVED them! Thank you!

  38. You are a blessing at this time when there is no much negative stuff. May God bless you
    every day and encourage you as you encourage me.

    Hugs,
    Phyllis

  39. Thanks for this recipe. I made a pan yesterday and they are fantastic – they’re chewy and delicious. They taste like they’re good for you due to the oatmeal. Definitely a keeper that I will make again and again.

  40. I just love this blog, and it’s such a treat to see when you’ve posted. Everything is beautiful here.

  41. These oatmeal peanut butter bars were amazing! Thank you for sharing.