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Peanut Butter Swirl Brownies Recipe

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Holy moly, this Peanut Butter Swirl Brownies Recipe is good! If you’re a peanut butter fan, keep this brownie recipe safe! Baking brownies is never wrong, and this easy dessert recipe proves that!

Not only is every bite loaded with peanut butter, but don’t forget that you will also get that fudgy chocolate texture and taste. This makes quite a large batch, but I’ll leave that up to you if you want to share!

You know that I have to ask the biggest question surrounding brownie desserts. Are you an edge fan, or do you prefer to eat the brownies that are smack dab in the middle?

I go back and forth. Because the truth is, I’ll never turn down any piece of brownie, no matter where it’s located.

PB Swirl Brownies Recipe

Since you will use a brownie mix for this dessert, it reduces the prep time and work needed. Dessert mixes are one of my favorite ways to “cut down” on the steps needed. And no one ever knows the difference!

I’ve made all sorts of brownie recipes, from scratch to ones made with mixes, and my boys never ask me what I’ve done differently, which leads me to believe that they can’t tell the difference.

If they can’t tell the difference, brownie mixes become a simple way to prep, bake, and eat. I love all the varieties at the store, which give many great options.

How do I know when brownies are done baking?

Knowing when brownies have finished baking can be challenging, yet possible if a few steps are followed.

Upon pulling them out of the oven, a visual inspection of the brownies can determine whether or not they are done. The top should be slightly firm and dull in color, and a crust may have formed around the edges.

Furthermore, inserting a toothpick into the center should come out with only a few moist crumbs. If wet batter sticks to it upon removing, then additional time in the oven is needed.

Lastly, keeping track of how long your recipe requires in the oven and at what temperature can also aid in correctly judging when your brownies are finished baking.

Specialty Ingredients:

The following ingredients are affiliate links on Amazon because they may be a bit hard to find in your normal store.  I wanted you to be able to see exactly which things we are using.

Reminder, not all ingredients in the Peanut Butter Brownies Recipe are linked above, just the ones that may be a bit difficult to find or that you might be unsure of what to look for

Shop My Kitchen:

The following items can be found in my kitchen here at Miller Manor. Simply click the image that interests you – yes, they do contain affiliate links.

Must Have Resources:

When making Brownie Mix Brownies at home, you really need to have the following Amazon affiliate tools on hand.



Make it a Meal:

You know you want to learn more about meal planning! It’s a simple process that lowers your stress level, too.

Below is a simple sample; meal planning has become one of my everyday habits.

Main Dish: Easy Tilapia and Mango Fish Tacos Recipe

Vegetable Side: Asparagus Spirals

Starch Side: Oven Roasted Red Potatoes Recipe

Refreshing Drink: Paloma Mocktail Recipe

Best Brownie Recipes:

Once you make this Brownie Swirl Recipe, keep up with those brownie cravings! Below are simple ways to make your homemade brownies over and over again.

Here are a few of my favorite brownie desserts that I think you will love!

This The Best Red Velvet Iced Brownie Recipe is perfect for any time of the year! I love the frosting!

My boys rave about this Salted Caramel Brownie Recipe!

Making Monster Brownies is a fun and delicious treat for the kids.

Don’t miss out on these Cherry Brownies with Chocolate Ganache!

These Chocolate Chip Mini Brownies are easy to pick up and eat!

Make a double batch of this Addictive Cadbury Creme Egg Brownie Recipe! Perfect for Easter.

If you love brownies, this Cake Mix Brownies Recipe can’t be topped!

How do I store baked brownies?

Storing baked brownies is one of the most important steps in ensuring they maintain their flavor and texture over time.

Baked brownies should always be stored in an airtight container, or wrapped tightly with plastic wrap or aluminum foil, to keep out moisture and any other contaminants that could affect the taste or texture.

Additionally, cooled brownies should not be left uncovered at room temperature for long periods, as this can lead to a dry product. Brownies should ideally be refrigerated for up to a week and can also be frozen for up to three months.

When freezing, it is important to ensure the brownies are completely cool before covering them with plastic wrap and storing them in an airtight container.

More Peanut Butter Recipes:

PB Swirl Brownies Recipe

PB Swirl Brownies Recipe

Yield: 16
Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes

This PB Swirl Brownies Recipe is the perfect way to combine smooth peanut butter with chocolate flavor. Each brownie is packed with fudgy goodness!


  • 1 box of brownie mix
  • 2/3 Cup of Smooth peanut butter
  • 1/3 Cup of powdered sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • ¼ Cup of chopped peanuts
  • 1/3 Cup of Milk chocolate chips


Preheat the oven to 350 degrees.

Spray an 8X8 pan with non-stick cooking spray.

Follow the directions on the brownie mix box to make the brownie batter. Once done, pour 3/4 of the mixture into the pan. Smooth it out.

Grab a bowl and mix the powdered sugar, peanut butter, egg, and vanilla. It should be smooth. Spoon that mixture over the top of the brownie batter and then smooth it out.

Add the rest of the brownie batter over the top of the peanut butter layer. Drop it in spoonfuls, and then use the spoon to swirl everything together carefully.

Sprinkle the chocolate chips and chopped peanuts on top.

Put the pan in the oven to bake for 30-35 minutes.

Let the brownies cool and then cut and serve.

Nutrition Information:
Yield: 16 Serving Size: 1
Amount Per Serving: Calories: 117Total Fat: 8gSaturated Fat: 2gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 12mgSodium: 73mgCarbohydrates: 9gFiber: 1gSugar: 5gProtein: 4g

This data was provided and calculated by Nutritionix on 1/19/2023

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