side view of a peanut butter cookie bar with chocolate chips and a bite taken out. the bar sits on a wrinkled white piece of parchment paper with other cookie bars blurred in the background.
Gluten Free Oatmeal Peanut Butter Cookie Bars are soft baked & thick bars loaded with peanut butter, oatmeal, and chocolate chips.

Oatmeal Peanut Butter Cookie Bars are about to rock your world. You will be making these on repeat. You won’t be able to think of anything else. These cookie bars will be your new family fave. I know it for fact.

I made a batch earlier this afternoon and here I am tonight… with no bars left.

These bars are soft-baked. They are peanut buttery, gooey in the center, but don’t fall apart in your hands. They’re perfectly chewy and um.. have chocolate chips and oats and all the happy ingredients you could ever want.

stack of three peanut butter bars loaded with chocolate chips, oats, and peanuts. The stack sits on a white counter and a white background, crumbs and other cookie bars are blurred in the background.

Ingredients for oatmeal peanut butter bars and substitutions:

  • natural peanut butter: I’m sharing some of my favorite natural peanut butter brands below. I used about 1 cup of creamy natural peanut butter and 1/2 cup chunky natural peanut butter. It’s fun to play around with creamy/chunky depending how much texture you want in your bars.
  • eggs: just 2. I haven’t tested it with flax eggs or any egg substitutes, so if you do any experimenting with egg alternatives, let me know how it goes!
  • vanilla extract: for that warm cookie feeling
  • Good & Gooey peanut butter cookie mix.

Natural peanut butter brands I love:

overhead image of a peanut butter bar leaning against another cookie bar with a bite taken out of it. both bars sit on a wrinkled piece of parchment paper.

How to make peanut butter oat cookie bars:

It’s so simple! Whisk together the peanut butter, eggs and vanilla. Add in the baking mix to the bowl. Whisk again until combined.

Line an 8 x 8 inch square pan with parchment paper and press the batter into the pan with the spatula in an even layer. Sprinkle the remaining chocolate chips on the top.

Bake for 15 minutes. Allow the bars to sit in the pan to cool for 5 – 10 minutes. Slide a knife around any edges of the bars touching the pan and pull up the parchment paper to place the bars on a cutting board Cut into 9 squares and enjoy!

These are so good warm, room temp, or even chilled!

#1 tip for these oatmeal bars:

DO. NOT. OVERBAKE. 15 minutes is perfect for thick, gooey, soft baked cookie bars.

overhead image of a peanut butter cookie bar with chocolate chips and a bite taken out of the bar. the cookie bar sits on a wrinkled piece of white parchment paper with other cookie bars.

More bars and cookies you’ll love:

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overhead image of a peanut butter bar leaning against another cookie bar with a bite taken out of it. both bars sit on a wrinkled piece of parchment paper.

Oatmeal Peanut Butter Cookie Bars (gluten free + dairy free)

  • Author: Lindsay Grimes Freedman
  • Prep Time: 10 minutes
  • Cook Time: 15 minutes
  • Total Time: 25 minutes
  • Yield: 9 bars 1x
  • Category: desserts
  • Method: baking
  • Cuisine: bars
  • Diet: Gluten Free
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Description

Gluten Free Oatmeal Peanut Butter Cookie Bars are soft baked & thick bars loaded with peanut butter, oatmeal, and chocolate chips.


Scale

Ingredients


Instructions

  1. Preheat oven to 350F.
  2. Whisk together the peanut butter, eggs and vanilla in a medium bowl.
  3. Add in the baking mix to the bowl. Whisk again until combined. I find using an electric mixer is easiest. 
  4. Line an 8 x 8 inch square pan with parchment paper and press the batter into the pan with the spatula in an even layer.
  5. Sprinkle the top with the remaining chocolate chips.
  6. Bake for 15 minutes.
  7. Allow the bars to sit in the pan to cool for 5 – 10 minutes.
  8. Slide a knife around any edges of the bars touching the pan and pull up the parchment paper to place the bars on a cutting board.
  9. Cut into 9 squares and enjoy!


Nutrition

  • Serving Size: 1 bar
  • Calories: 380
  • Sugar: 24.7g
  • Sodium: 159mg
  • Fat: 22.7g
  • Saturated Fat: 4.4g
  • Unsaturated Fat: 0g
  • Trans Fat: 0g
  • Carbohydrates: 31.5g
  • Fiber: 3g
  • Protein: 14.9g
  • Cholesterol: 36mg

Keywords: cookie bars, peanut butter cookie bars, oatmeal peanut butter bars, oatmeal peanut butter blondies, peanut butter chocolate chip bars, oatmeal peanut butter chocolate chip bars,