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These Peanut Butter and Jelly Bars turn a classic lunchtime snack into a delicious, gooey cookie bar! Easy gooey bars start with a cake mix and are full of peanut butter and jam flavor – you’re going to love them.

stacked bars with peanut butter and jelly layered.

These cookie bars use a cake mix as base, and the outer layers are primarily peanut butter, while the middle layer brings in the sweet jelly. You can use jam or jelly all depending on whatever you prefer!

I Love gooey bars so much because they are so versatile and can be done in so many different ways. Just like this fun recipe. When my daughter was little she loved them, therefore they are perfect for anyone!

ingredients in peanut butter and jelly laid out on a marble counter.

Ingredients Needed

  • Yellow cake mix: You really can use any flavor or brand, but I love using yellow cake mix.
  • Vegetable oil: Helps moisten the dough and keep it soft.
  • Peanut butter: Make sure to use a no-stir (not natural) peanut butter
  • Jam or Jelly: Use your favorite flavor.

How to make PB&J Bars

  • Preheat oven to 350°F. Line a 9×9” pan with foil and spray with cooking spray.
  • With a hand mixer or electric mixer, beat eggs, cake mix, oil, and peanut butter until mixture is crumbly. Press about 1/2 of the mixture into prepared pan.
  • Spread jam over the crust. Scoop bits of remaining batter and flatten between your hands and place on top the jam. It won’t fully coat.
  • Bake for 25-28 minutes, until top just starts to get golden brown. Cool completely before slicing into bars.
stacked bars with peanut butter and jelly layered.

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Expert Tips

  • I would recommend using seedless jam or jelly to avoid an extra texture that is not wanted in these bars.
  • You can add peanut butter chips or white chocolate chips into this recipe if you would like too!
  • You know they’re done when they become golden brown around the edges and are no longer glossy.

FAQs

How do you know when gooey bars are done baking?

You know they’re done when they become golden brown around the edges and are no longer glossy.

Can you freeze gooey cookie bars? 

Yes you can in an airtight container for up to 3 months.

5 from 3 votes

Peanut Butter and Jelly Bars

These are the perfect peanut butter cake bars with jelly in the middle – the perfect PB&J!
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 16 bars

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Ingredients

  • 1 (approximately 15 ounces) box yellow cake mix
  • 2 tablespoons vegetable oil
  • 2 large eggs
  • ½ cup peanut butter
  • ½ cup jam or jelly, (I used seedless strawberry jam)

Instructions 

  • Preheat oven to 350°F. Line a 9×9” pan with foil and spray with cooking spray.
  • With a hand mixer or electric mixer, beat eggs, cake mix, oil, and peanut butter until mixture is crumbly. Press about 1/2 of the mixture into prepared pan.
  • Spread jam over the crust. Scoop bits of remaining batter and flatten between your hands and place on top the jam. It won't fully coat.
  • Bake for 25-28 minutes, until top just starts to get golden brown. Cool completely before slicing into bars.

Notes

  • Freeze in an airtight container up to 3 months.
  • Don’t use natural peanut butter (only a no-stir brand).
  • Seedless jam/jelly is best.

Nutrition

Serving: 1serving | Calories: 102kcal | Carbohydrates: 9g | Protein: 3g | Fat: 6g | Saturated Fat: 1g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 3g | Trans Fat: 0.01g | Cholesterol: 23mg | Sodium: 47mg | Potassium: 62mg | Fiber: 1g | Sugar: 6g | Vitamin A: 34IU | Vitamin C: 1mg | Calcium: 10mg | Iron: 0.3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

5 from 3 votes (1 rating without comment)

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48 Comments

  1. I can’t believe you didn’t eat pb&j as a kid!!! I would have died if not for pb&j. It was my only reliable source of nutrients. These bars look awesome. I’m definitely going to try the pb chip version. Yum!

  2. I am not a pb and j girl (totally not American, I know:) but these look so gooey, I can’t resist! Between the cake mix and the pb chips and the SCM, I think this would convert me!

  3. I love peanut butter and I love gooey jelly. I’d snack on these and feel happy for the rest of the day.

  4. Wow they look so good! I made some PB&J layered crumble-topped bars like this for my cookbook. But no gooey marshmallows and no soft squishy cake base. Your bars look wonderful and I have a marshmallow gooey bar recipe up today so needless to say, I would inhale these bars!

  5. I was an adult, like 19 or 20, before I had a PB and J sandwich. They’re okay. HOWEVER, you had me at Sweetened Condensed Milk.