Peanut butter and jelly bars are a tasty twist on a classic PB&J.

Grab your fave jam and swirl some on top of a sweet peanut butter cookie dough to bake up these chewy PB&J Bars for the ultimate after-school snack.

close up of Peanut Butter and Jelly Bars in a stack

Holly’s Sweet & Salty Highlights:

  • Flavor: Classic peanut butter and jelly flavors in a soft & gooey bite-sized bar.
  • Difficulty: Shortcut ingredients make this quick & easy. Prep the cookie dough mix, swirl the jam on top, and bake.
  • Swaps: Switch out the jelly for a swirl of Nutella for a chocolatey peanut butter bar!
peanut butter cookie mix , egg , oil , water , oats , strawberry jam and peanuts with labels to make Peanut Butter and Jelly Bars

PB&J Essentials

Cookie Base: Any brand of peanut butter cookie mix will work. Don’t forget about the ingredients on the package, too!

Oats: Use quick oats instead of regular rolled oats to give bars a smoother texture.

Jam: Strawberry is a classic choice for PB&J recipes, but grape jelly, peach jam, or orange marmalade will all taste great.

Peanuts: Dry-roasted and salted peanuts give an extra bump of protein, texture, and flavor. You can switch them up for walnuts, pistachios, cashews, or pecans if you like.

Tasty Twists: Get creative and mix in extras like chia seeds, flax seeds, or crunchy banana granola to the peanut butter cookie dough base.

Baking PB&J Bars

  1. Prepare peanut butter cookie dough according to the package instructions, and add the oats.
  2. Press ⅔ of the dough into a prepared pan and evenly spread it with the jam.
  3. Crumble the remaining dough over the top and bake.

Cool completely before slicing.

Peanut Butter and Jelly Bars sliced on a wooden board

Sweet Tips & Shortcuts

  • Use ready-made cookie dough for even faster prep time!
  • Start with room temperature butter and eggs for faster blending. Cold eggs? Leave them in a glass of warm water for 5-10 minutes to warm them up.
  • Line the baking dish with parchment paper that overhangs on each side for easy removal (and easier slicing and clean up).
  • Cool bars in the fridge for faster slicing.
plated Peanut Butter and Jelly Bars with a bite taken out of one

Keeping Them Fresh

  • Keep leftover peanut butter and jelly bars in a covered container at room temperature or in the refrigerator for up to 3 days.
  • Freeze bars in a single layer and then transfer them to a zippered bag for up to three months. Add one or two to a backpack or briefcase and they’ll be thawed by lunchtime!

Perfect Peanut Butter Treats!

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close up of Peanut Butter and Jelly Bars in a stack
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Peanut Butter and Jelly Bars

Peanut Butter and Jelly Bars are a fun twist on the classic sandwich, baked into a sweet and chewy treat everyone will love!
Prep Time 5 minutes
Cook Time 40 minutes
Total Time 45 minutes
Servings 16
Author Holly

Ingredients  

  • 1 (17.5 ounce) peanut butter cookie mix plus ingredients called for on cookie mix pouch
  • ½ cup quick oats
  • ½ cup strawberry jam or jam of your choice*
  • ¼ cup salted peanuts roughly chopped

Instructions 

  • Preheat oven to 350℉. Grease or line an 8×8-inch baking pan with parchment paper.
  • Prepare cookie dough according to package directions. Stir in the quick oats.
  • Press ⅔ the peanut butter dough evenly into the bottom of the prepared baking pan.
  • Spread the jam evenly over the peanut butter dough.
  • Crumble the remaining dough over the jam. Top with chopped peanuts.
  • Bake for 35-40 minutes, or until the edges are golden brown and the center is firm.
  • Allow the bars to cool completely before slicing.

Notes

For a version that is less sweet, swap regular jam with no sugar added or fruit-only preserves.
Store leftover peanut butter and jelly bars in an airtight container at room temperature or in the refrigerator for up to 3 days, or freeze for up to 3 months.
5 from 3 votes↑ Click stars to rate now!
Or to leave a comment, click here!

Nutrition Information

Calories: 215kcal | Carbohydrates: 27g | Protein: 4g | Fat: 11g | Saturated Fat: 4g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 4g | Trans Fat: 0.2g | Cholesterol: 23mg | Sodium: 118mg | Potassium: 92mg | Fiber: 1g | Sugar: 15g | Vitamin A: 171IU | Vitamin C: 1mg | Calcium: 17mg | Iron: 1mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Dessert, Snack
Cuisine American

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Peanut butter and jelly bars in a stack on a plate
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Comments

  1. I made these with my kids at day care this week. They LOVED them! But, I did have to cook them longer than 20 minutes. My cooking time was almost 40 minutes and they were still moist & gooey.

  2. This is such a sweet idea! My kiddos love a good pb & J, so we will have to try this one! Thanks for sharing with us this week at the Monday Funday link party!

    Take care,

    Trish