Homemade Peanut Butter Swirl Brownies Recipe – All-Natural Ingredients

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Peanut butter and chocolate is one of the most popular combos, which is why this homemade peanut butter swirl brownie recipe is so amazing.

Homemade brownies are so much better than brownies from a box. These are a decadent fudgy brownie that has a wonderful balance of chocolate and peanut butter.

Several Peanut Butter Swirl Brownies spread out over a dark wood cutting board.

What Are The 3 Different Types Of Brownies?

The three types of brownies are:

  1. Fudgey
  2. Cakey
  3. Chewy

What Kind Of Brownies Are These?

These homemade peanut butter swirl brownies are more fudgy with just a hint of cakey. (See the recipe tip below)

How To Add Butter To Brownie Mix?

The best way is to melt it and add it slowly to the wet ingredients first. Whisk everything well and then combine it with the dry ingredients.

What Pan Is Best For Baking Brownies?

Normally, the best pan is an 8 x 8 baking pan. However, if you are like me and don’t have one, you can use a casserole dish too.

How Do I Get A Gooey Center In My Brownies?

To get a gooey center, you basically have to undercook the brownies just slightly. You want the eggs to be cooked, so don’t let the center be too undercooked. But a little bit is fine.

Recipe Tips

  1. Once fully cooled, store these brownies in the freezer for about 30 minutes to get a chewier consistency. You don’t want to freeze them, though. You just want them cold enough to get a little chewy.
  2. If you don’t want to add the extra butter to grease the baking dish, you can line the dish with parchment paper instead.
Peanut Butter Swirl Brownies on a cutting board.

Can I Add Coffee To Brownie Mix?

If you were using a boxed mix, you could substitute coffee for the water called for on the box. But in this case, because there is no water called for, you could instead add a tablespoon or so of instant coffee if you don’t mind using it. It’s best to whisk it into the dry ingredients.

Are These Homemade Peanut Butter Swirl Brownies Gluten-Free?

There are no wheat-based ingredients called for in this recipe. That said, if it’s important that these be gluten-free, you’ll want to be sure that all of your individual ingredients are labeled as gluten-free when you purchase them.

About The Chocolate Chips

Choose the chips you are most comfortable using. You can use dark chocolate, semi-sweet chocolate chips, or even sugar-free chocolate chips.

About The Ingredients

Brownie Ingredients

Oat flour – Gluten-free if needed.

Unsweetened cocoa powder – You can also use cacao powder or carob powder.

Baking powder – Use fresh powder so it works.

Salt – Use any type you prefer. I used pink Himalayan salt.

Unsalted butter – Salted butter will work in a pinch. Do not omit the salt if you use salted butter. You’ll need extra for buttering your baking dish.

Dark chocolate chips – You can also use cocoa nibs or carob chips if you prefer.

Honey – Any type will work.

Eggs – Room-temperature eggs work best, but you can use chilled eggs in a pinch.

Pure vanilla extract – Don’t use vanilla flavoring. You want the real stuff.

Peanut Butter Swirl Ingredients

Natural peanut butter – Or any unsweetened, all-natural nut or seed butter.

Honey – Any type.

How To Make Homemade Peanut Butter Swirl Brownies?

An oven display set to 350 degrees Fahrenheit.
A cube of butter in a buttered baking dish.

Preheat your oven to 350°F (175°C) and butter an 8×8-inch (20×20 cm) square baking pan or a similarly sized casserole dish.

Flour, cocoa powder, salt and baking powder in a mixing bowl.
Dry ingredients mixed together in a mixing bowl with a whisk.

In a medium-sized mixing bowl, whisk together the oat flour, cocoa powder, baking powder, and salt.

Chocolate chips added to dry ingredients in a mixing bowl.
Chocolate chips mixed into a flour mix in a mixing bowl.

Stir the chocolate chips into the dry mix and set this dry mixture aside.

The wet ingredients whisked together.

In a pot, melt the butter. While that melts, put all the remaining wet ingredients into a separate mixing bowl. Whisk well. Let the butter cool before proceeding.

A mixing bowl of dry flour mix on the left, a small pot of melted butter in the middle and a mixing bowl of wet ingredients on the right.

You should now have three containers with ingredients.

Whisking the melted butter into the wet ingredients.

Slowly pour the melted butter into the honey and maple syrup, stirring continuously to combine.

Pouring wet ingredients into dry ingredients in a large, metal mixing bowl.
Peanut Butter Swirl Brownie batter whisked together in a mixing bowl.

Now, gently fold the wet ingredients into the dry mixture until you have a smooth, thick brownie batter.

Pouring Peanut Butter Swirl Brownie batter into a buttered casserole dish.
Peanut Butter Swirl Brownie batter settled in a buttered baking dish.

Pour the brownie base into the prepared baking pan, spreading it out evenly.

Dollops of peanut butter mix dropped over the brownie batter in a baking dish.
Peanut butter mix swirled through the brownie batter in a casserole dish.

Mix the peanut butter and honey together, and then drop dollops of the mixture over the wet brownie batter. Use a knife to swirl the peanut butter through the brownie batter.

Baked Peanut Butter Swirl Brownies cooling in a baking dish.

Bake in the preheated oven for 20-25 minutes or until the brownies have set around the edges but are still slightly gooey in the center. A toothpick inserted into the center should come out with a few moist crumbs.

Cutting Peanut Butter Swirl Brownies in a casserole dish.

Allow the brownies to cool in the pan for about 15-20 minutes, then run a knife around the edge and cut them into 20 squares.

And overhead view of Peanut Butter Swirl Brownies sitting on a cutting board.

Serve and enjoy.

Storing These Peanut Butter Brownies

Store these brownies in the fridge in an airtight container for up to 5 days.

Freezing Homemade Peanut Butter Swirl Brownies

These will freeze well if wrapped well for up to 4 months.

Reheating Homemade Peanut Butter Swirl Brownies

If you want warm brownies, microwave them in short intervals until they are at your desired level of warmness.

More All-Natural Brownie Recipes

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Several Peanut Butter Swirl Brownies spread out over a dark wood cutting board.

Homemade Peanut Butter Swirl Brownies Recipe

Deliciously decadent brownies with a peanut butter swirl.
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Course: Dessert
Cuisine: American
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Servings: 20 brownies

Ingredients

  • 1 cup oat flour
  • ½ cup unsweetened cocoa powder
  • ½ tsp. baking powder
  • ½ tsp. salt
  • ½ cup unsalted butter
  • ½ cup dark chocolate chips
  • cup honey
  • 2 large eggs
  • 1 tsp. pure vanilla extract

Peanut Butter Swirl

  • cup natural peanut butter
  • 3 tbsp. honey

Instructions

  • Preheat your oven to 350°F (175°C) and butter an 8×8-inch (20×20 cm) square baking pan or a similarly sized casserole dish.
    A cube of butter in a buttered baking dish.
  • In a medium-sized mixing bowl, whisk together the oat flour, cocoa powder, baking powder, and salt.
    Dry ingredients mixed together in a mixing bowl with a whisk.
  • Stir the chocolate chips into the dry mix and set this dry mixture aside.
    Chocolate chips mixed into a flour mix in a mixing bowl.
  • In a pot, melt the butter. While that melts, put all the remaining wet ingredients into a separate mixing bowl. Whisk well. Let the butter cool before proceeding.
    The wet ingredients whisked together.
  • You should now have three containers with ingredients.
    A mixing bowl of dry flour mix on the left, a small pot of melted butter in the middle and a mixing bowl of wet ingredients on the right.
  • Slowly pour the melted butter into the honey and maple syrup, stirring continuously to combine.
    Whisking the melted butter into the wet ingredients.
  • Now, gently fold the wet ingredients into the dry mixture until you have a smooth, thick brownie batter.
    Pouring wet ingredients into dry ingredients in a large, metal mixing bowl.
  • Pour the batter into the prepared baking pan, spreading it out evenly.
    Pouring Peanut Butter Swirl Brownie batter into a buttered casserole dish.
  • Mix the peanut butter and honey together, and then drop dollops of the mixture over the wet brownie batter. Use a knife to swirl the peanut butter through the brownie batter.
    Dollops of peanut butter mix dropped over the brownie batter in a baking dish.
  • Bake in the preheated oven for 20-25 minutes or until the brownies have set around the edges but are still slightly gooey in the center. A toothpick inserted into the center should come out with a few moist crumbs.
    Baked Peanut Butter Swirl Brownies cooling in a baking dish.
  • Allow the brownies to cool in the pan for about 15-20 minutes, then run a knife around the edge and cut them into 20 squares.
    Cutting Peanut Butter Swirl Brownies in a casserole dish.
  • Serve and enjoy.
    An overhead view of Peanut Butter Swirl Brownies sitting on a cutting board.

Notes

Data will be available as soon as the calculator starts working again. It is currently being worked on. Sorry for any inconvenience.

Nutrition

Serving: 1brownie

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2 Comments

  1. I want to try these! I’m allergic to honey so can I use maple syrup in place of honey? Or is there something else that would work better? Thanks.

    1. Kim – Yes, you can use maple syrup. However, they won’t be as sweet, so you may want to supplement with a bit of stevia just to bring out the sweetness of the maple syrup more. You can also increase the maple syrup in the peanut butter by about 1 tbsp. Let me know how it goes!