Chocolate Oatmeal Peanut Butter Bars

RECIPE BY: San

DATE: February 6, 2026

Total Time 27 minutes

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Who doesn’t love the classic combination of chocolate, oatmeal, and peanut butter? These Chocolate Oatmeal Peanut Butter Bars are easy to make and always a hit!

They’re perfect for satisfying your sweet tooth or bringing it to a potluck or party. Trust me; they’ll be gone before you know it!

stack of oatmeal peanut butter chocolate bars

Peanut butter and chocolate are two of my favorite things! Melting the chocolate chips with peanut butter and pouring it over chewy oatmeal bars is a delicious treat that is always hit, no matter where I take these bars.

Try making these bars ahead of time and storing them in the fridge – I do this for the holidays, a snack for upcoming sporting events or having on hand to take to friends.

close up shot of oatmeal peanut butter chocolate bar

I have loved this recipe for Chocolate Oatmeal Peanut Butter Bars since my childhood. I have fond memories of camping with family & friends with these babies. My mom’s friend, Shelia, always made these bars, and we counted on her every camping trip to make the most delicious desserts.

stack of oatmeal peanut butter chocolate bars with a bite out of one bar

Recipe Variations & Tips

  • I love the original recipe; I wanted to try a healthier twist; I removed Karo syrup {corn syrup}, and replaced it with a combination of agave nectar and honey. I was a bit worried about this, thinking it just might not work out, but it did.
  • You can make this recipe without chocolate; it’s not my preference, but they are still delicious. Peanut Butter Oatmeal Bars – Chewy oatmeal bars with a white chocolate peanut butter topping; no one can keep their hands off these.
  • Love Nuetella? Try Nutella Bars, a layered bar made with oatmeal, white chocolate, and Nutella. Great for barbecues, camping, or an afternoon snack.
  • Make sure not to overbake these bars! They are better chewy than crunchy, don’t bake past 12 minute baking time.
  • Store these bars in an airtight container, I like to use parchment paper to separate the bars, in case they get a little warm (sometimes at room temp) and the chocolate starts to soften.

My family loves these Oatmeal Peanut Butter Bars, regardless of the season. However, I must caution you when making these bars, because they are so addictive your family will most likely devour them entirely.

oatmeal peanut butter chocolate bars in storage container

How To make Chocolate Oatmeal Peanut Butter Bars

Prepare the Oatmeal Bars

Preheat oven to 375 degrees; grease a 9×13 metal pan & line with parchment paper (optional).

Add quick oats, rolled oats, brown sugar, vanilla, corn syrup, and butter into a large mixing bowl and mix together until combined.

ingredient shot of butter, oats, brown sugar and corn syrup

Press into the prepared 9×13 pan lined with parchment paper.

oat mixture pressed into 9x13 pan with parchment paper

Place into the preheated oven and bake for 11-12 minutes or until light-golden brown. Be sure not to over bake, these bars are better chewy than crunchy!

baked oat bars in baking dish lined with parchment paper

Make the Chocolate & Peanut Butter Topping

While the bars are baking in the oven; Microwave chocolate and peanut butter in a medium glass bowl for one minute.

Remove and quickly stir; return to microwave and heat for another 30 seconds, then stir again. Repeat until chocolate and peanut butter are well combined and melted.

melted chocolate and peanut butter in bowl

Once the bars are done baking, pour the melted peanut butter and chocolate topping on the bars; making sure to do this immediately after the bars get out of the oven.

melted chocolate spread over bars in 9x13 metal pan

Cool to room tempature, then place in the refrigerator and chill until set.

When the bars have completely cooled, cut into squares and serve. Store bars in an airtight container in the refrigerator for 5-6 days.

overhead shot of oatmeal chocolate peanut butter bars cut into squares

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collage image of chocolate peanut butter oatmeal bars with recipe title

Chocolate Oatmeal Peanut Butter Bars

Prep: 15 minutes
Cook: 12 minutes
Total: 27 minutes
Servings: 16
Calories: 409 kcal
Who doesn't love the classic combination of chocolate, oatmeal, and peanut butter? These Chocolate Oatmeal Peanut Butter Bars are so easy to make and are always a hit!
stack oatmeal peanut butter bars

Video

Ingredients
 

Oatmeal Bars

  • 1 cup brown sugar
  • 2/3 cup butter softened to room temp.
  • 1/2 cup Karo Syrup (or 1/2 cup agave nectar + 2 tablespoons honey)
  • 3 cups quick oats
  • 1 cup rolled oats
  • 1 teaspoon vanilla
  • 1 teaspoon salt

Chocolate & Peanut Butter Topping

  • 2 cups milk chocolate chips
  • 3/4 cup peanut butter

Instructions
 

Oatmeal Bars

  • Preheat oven to 375 degrees.
  • Grease a 9×13 metal pan.
  • Mix all the ingredients and press into pan.
  • Bake at 375 for 10-12 minutes or until golden brown.

Chocolate & Peanut Butter Topping

  • In a medium glass bowl melt chocolate and peanut butter in the microwave for one minute. Remove and quickly stir, return to microwave and heat for another 30 seconds then stir again. Repeat until chocolate and peanut butter are well combined and melted.
  • Spread on bars immediately after they get out of the oven. Chill in the refrigerator. Once cooled, cut into squares and serve.

Calories: 409kcalCarbohydrates: 53gProtein: 6gFat: 20gSaturated Fat: 9gCholesterol: 23mgSodium: 294mgPotassium: 171mgFiber: 3gSugar: 37gVitamin A: 285IUVitamin C: 0.2mgCalcium: 56mgIron: 1.5mg

stack oatmeal peanut butter bars
Tried this recipe?Let us know what you think!

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28 Comments

  1. Chocolate. Peanut butter. Oatmeal. Sounds so delicious!! Thank you so much for linking up to the Moonlight & Mason Jars party. I’ve chosen you as one of our “featured posts” for this week. If this is the first time you’ve been featured, come grab one of our “featured” buttons for your blog. Thanks again and I can’t wait to make these.

  2. This is a great recipe, however it sure lacks in the instructions department. When you have made something your whole life, it comes as second nature. As a well seasoned cook(aka old), it takes a little figuring. First of all, not everyone knows that 2/3 cup = 10 TBS +2 teaspoons. That out of the way, it would also be helpful to know that the butter or margaring needs to be extremely soft!. I think my stove is fairly accurate, as it is new and I had to bake this for at least 16 minutes before it started to brown. I will keep this recipe and add a few little notes to make it easier.

    1. Thanks Jacquie for your feedback. You were right to say when you have made something for some time it becomes second nature. I happily adjusted the instructions and I hope this will help you (and others) the next time you make it.
      I am glad you enjoyed it and look forward to seeing you around the site. Cheers in 2014. XOXO San

      1. Thanks for the recipe. I note you adjusted the directions, but you typed 1- Tablespoons…. instead of 10 Tablespoons

  3. I LOVE peanut butter but peanut butter with chocolate MMmmmmm yum!! Since it has oatmeal can we consider this to be partially heathy LOL. LOVE all the recipes you share. Perfect for new meal & snack ideas we have been looking for ! May I add, I had THOUGHT my life was hectic and stretched thin with living on a farm and running a rescue kennel and raising my nieces baby boy who just turned 3 and we have had him with us since the day he was born (legally adopted) after our 3 older kids had grown and moved out on their own I had thought my time would free up a little (no more running to school events or sport activities etc) but I think I have so much less time now then I did back then. I don’t know how you do all you do with 5 young ones but my hat is off to you for making it seem simple !!! Gives me hope yet that I will once again find my nitch for living in a busy hectic world LOL.

  4. So upset. People use recipes to follow instructions because they don’t know how to make something. You listed milk as an ingredient an never used it. I’ll be so mad if these don’t turn out right. Using your list, I bought fancy items such as the agave and now I’m not even sure if it will work 🙁

    I’m assuming you just made a mistake. But please double check.

    1. Kara – milk is not listed it says milk chocolate chips. Hope that helps clear it up for you. If you used milk chocolate chips and not just milk they will turn out amazing. San

    2. oh and there is a recipe video included in the post, if you watch that as well you will see it is milk chocolate chips and not milk. I really hope this worked for you. San