Easy Peanut Butter Brownies

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See these Easy Peanut Butter Brownies for a fun spin on a classic favorite!

Easy Peanut Butter Brownies

Easy Peanut Butter Brownies

I am a huge fan of sweet and salty flavors together. If a dessert is overly sweet, it probably won't end up as one of our regular desserts. Peanut butter desserts have that salty balance and have always been one of my favorite things to make!

Adding peanut butter swirled right into the brownie batter makes them hard to resist. I don't even need a scoop of ice cream for these brownies! They are great just on their own. See this easy recipe below!

peanut butter brownies

Peanut Butter Swirl:

The thing that sets these brownies apart is the swirled peanut butter in the recipe. So even if you love your own from-scratch recipe or a special mix, you can still make these Peanut Butter Brownies.

We typically use Simply Nature Organic Peanut Butter, which I find at Aldi for about the same price as the regular peanut butter.  You can use whatever you have on hand, but we suggest if you love natural peanut butter, make sure to mix in the oil very well before adding it to your recipe! 

Just prepare your brownie mix as usual, and then pour into your 9×13 pan.

Soften the peanut butter in the microwave before adding it to the brownies. This will make it much easier to swirl.

I have a baking pan like this Pioneer Woman Baking Dish. It holds in a lot of heat and makes a great pan of brownies.  Then, bake as usual!

Feel free to try this recipe hack with your gluten free or sugar free mix, or even a brownie mix already containing nuts.

peanut butter brownies corner

My Best Brownie Hacks:

I always love to include my best brownie hacks any time I share a brownie recipe. Why? Well we all love brownies but they can be difficult to slice and serve sometimes. Especially if you're trying to keep them looking nice to share! Here are some ideas:

  1. Let cool on the counter until brownies are no longer warm to the touch. Then refrigerate for 30 minutes or until chilled. 
  2. Use a very sharp knife to cut brownies.  Avoid using the butter knife or cake knives.
  3. Before baking, Line your brownie pan with 2 layers of parchment, extending the sides up and over the sides of the pan. This lets you “lift” out the cooled brownie out, so you’re not battling the insides of the pan.
  4. Place the entire brownie on the flat surface like the counter or a cutting board to cut into squares.

I hope you get the chance to make these delicious brownies! Be sure to share on Facebook or in the comments if you have an amazing brownie hack!

Print Your Brownies Recipe Here:

Yield: 16

Peanut Butter Brownies

Peanut Butter Brownies

This peanut butter addition is perfect for your favorite brownie recipe!

Prep Time 10 minutes
Cook Time 30 minutes
Additional Time 30 minutes
Total Time 1 hour 10 minutes


  • 1 box of brownie mix (preferred brand) 9x13 size
  • 1/4 cup water
  • 1/2 cup organic coconut oil
  • 2 eggs
  • 3/4 cup creamy peanut butter


    Heat oven to 350°F. Grease bottom of 13x9-inch pan with cooking spray.
    In medium bowl, stir brownie mix, water, coconut oil and eggs until well blended.
    Add to pan.
    In small microwavable bowl, heat your peanut butter uncovered on High 30 seconds; stir.
    Drop by spoonfuls in rows on top of the brownie batter.
    For marbled design, gently run through the spoon fulls with a butter knife through batter. Turn the pan 1 quarter and go the other direction. Do not stir!
    Bake 28-30 minutes or until toothpick inserted into center of batter comes out clean.
    For best results, allow to cool before slicing.

    Nutrition Information



    Serving Size


    Amount Per Serving Calories 155Total Fat 14gSaturated Fat 7gTrans Fat 0gUnsaturated Fat 5gCholesterol 26mgSodium 77mgCarbohydrates 5gFiber 1gSugar 1gProtein 4g

    Did you make this recipe?

    Please leave a comment if you love this recipe!

    Love these Peanut Butter Brownies? Try More Brownie Recipes from My Royal Kitchen Here!

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    1. Everything looks great. I’m making the peanut butter recipe now. Will try the 3-ingredient healthy next.

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