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Peanut Butter Brownies Recipe

Indulge in rich, fudgy peanut butter brownies! A perfect blend of sweet and nutty, these treats are easy to make and impossible to resist.

Peanut Butter Brownies on parchment paper.

Today’s recipe for peanut butter swirl brownies is so easy to make. It is a great choice if you are just starting to get your kids involved with helping in the kitchen. Part of what makes these yummy treats so simple is that I use a boxed brownie mix. I love using shortcuts like this to save time in the kitchen, but feel free to use your favorite scratch recipe.

If you love the combination of chocolate and peanut butter as much as I do, check out these recipes for easy chocolate peanut butter balls, peanut butter blondies, and Reese’s peanut butter cookies.

Too busy to make this right away? Pin it for later! Pin this post to your favorite board onย Pinterestย and it will be there when youโ€™re ready!

Peanut Butter Brownies on parchment paper with a butter knife.

Peanut Butter Brownies

Prep time: 5-10 minutes

Cooking time: 18-20 minutes

Total time: 23-30 minutes

Servings: 12

Peanut Butter Brownies on parchment paper.

Ingredients

  • Peanut butter brownie mix – A time saver that delivers rich chocolate flavor with a peanut butter twist.
  • Peanut butter – I like to use creamy peanut butter, such as Skippy or Jif, but you could use other nut butters too.
  • Egg (using large eggs is standard in most recipes) – Binds everything together for that fudgy texture.
  • Water – Keeps the brownies moist and gooey.
  • Vegetable oil – Adds softness and richness for chewy brownies.

Equipment

  • 8×8 inch square tin – Just the right size for a small batch of delicious treats. Metal pans are great for even cooking.

Instructions

1. In a large bowl, combine brownie mix with water, egg, and oil. Use a whisk or spatula to stir until smooth. An electric mixer could also be used.

Dry ingredients and egg in a clear mixing bowl with a whisk.

Tip: Add a splash of vanilla extract for extra flavor.

2. Line the baking pan with aluminum foil or parchment paper and spread the brownie mixture out evenly. Drizzle peanut butter over the mixture.

Brownie batter on a parchment paper lined baking sheet.

Tip: You can add as little or as much peanut butter as you like. I sometimes add a bit extra for even creamier brownies.

3. Preheat oven to 320 F and bake for 15-18 minutes or until just set.

4. Leave the brownies to cool on a cooling rack, then cut into squares. Enjoy!

Baked Peanut Butter Brownies cut up into squares on parchment.

Tips and Tricks:

  • Mix your ingredients just until everything is combined to keep your brownies nice and tender.
Brownie batter in a clear mixing bowl with a whisk.
  • For a marbled effect, swirl the peanut butter into the brownie batter with a knife instead of just drizzling it.
  • Try adding peanut butter chips or chocolate chips to the batter for an even more decadent treat. You could also sprinkle the top with a bit of flaky sea salt.
  • Keep an eye on the baking time; the brownies should be set, but a toothpick should come out with a few moist crumbs for that perfect fudgy center.
Peanut Butter Brownies on parchment paper.
  • Store any leftovers at room temperature in an airtight container to keep them moist and delicious for days! If you want to enjoy them warm, just pop one in the microwave for a few seconds first.
Peanut Butter Brownies on parchment paper.

These brownies are so good, I highly recommend you make sure you have someone to share them with! It is way too easy to eat them all.

Chocolatey brownies with peanut butter swirls, cut into squares on parchment paper.

If you love this peanut butter brownies recipe, click the stars below to give it a five star rating and leave a review! Please help me share it on Instagram, Facebook or Pinterest.

Peanut Butter Brownies on parchment paper.

Peanut Butter Brownies Recipe

Indulge in rich, fudgy peanut butter brownies! A perfect blend of sweet and nutty, these treats are easy to make and impossible to resist.
No ratings yet
Prep Time: 5 minutes
Cook Time: 18 minutes
Total Time: 23 minutes
Servings: 12 servings
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Equipment

  • 1 8×8 inch square tin

Ingredients

  • 1 box peanut butter brownie mix
  • 2-4 tbsp peanut butter
  • 1 egg large
  • 2 tbsp water
  • 2 tbsp vegetable oil

Instructions

  • In a large bowl, combine brownie mix with water, egg, and oil. Use a whisk or spatula to stir until smooth.ย An electric mixer could also be used.
  • Line the baking pan with aluminum foil or parchment paper and spread the brownie mixture out evenly. Drizzle peanut butter over the mixture.
  • Preheat oven to 320 F and bake for 15-18 minutes or until just set.
  • Leave the brownies to cool on a cooling rack, then cut into squares. Enjoy!

Notes

  • Add a splash of vanilla extract for extra flavor.
  • Mix your ingredients just until everything is combined to keep your brownies nice and tender.
  • For a marbled effect, swirl the peanut butter into the brownie batter with a knife instead of just drizzling it.
  • You can add as little or as much peanut butter as you like. I sometimes add a bit extra for even creamier brownies.
  • Try adding peanut butter chips or chocolate chips to the batter for an even more decadent treat. You could also sprinkle the top with a bit of flaky sea salt.
  • Keep an eye on the baking time; the brownies should be set, but a toothpick should come out with a few moist crumbs for that perfect fudgy center.
  • Store any leftovers at room temperature in an airtight container to keep them moist and delicious for days! If you want to enjoy them warm, just pop one in the microwave for a few seconds first.

Nutrition

Calories: 42kcal | Carbohydrates: 1g | Protein: 1g | Fat: 4g | Saturated Fat: 1g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 1g | Trans Fat: 0.02g | Cholesterol: 14mg | Sodium: 17mg | Potassium: 20mg | Fiber: 0.1g | Sugar: 0.3g | Vitamin A: 20IU | Calcium: 3mg | Iron: 0.1mg
about heather

Hello, Iโ€™m Heather!

I'm an active mom of twin boys who is always looking for opportunities to inspire creativity through fun crafts, do-it-yourself projects and delicious recipes. This blog has been an integral part of supporting my little family and I am so grateful to have you become a part of our journey! Let's create together... Read more...

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