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Home Β» Baked Goods Β» Peanut Butter Whiskey Fudge Brownies

October 15, 2021 (last updated May 25, 2022)

Peanut Butter Whiskey Fudge Brownies

5 from 1 vote
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These dark chocolate, fudgy brownies are layered with a peanut butter, peanut butter whiskey filling and a peanut butter swirl topping for the perfect sweet, salty and boozy dessert.

If you’re a fan of peanut butter whiskey desserts, try my soft peanut butter whiskey cookies and peanut butter whiskey milkshake recipes for more boozy treats. Be sure to check out more of my brownie recipes including my fudgy sweet potato brownies and traditional gluten-free brownies and gluten-free brownie brittle.

Peanut Butter Filling

Close up of 2 Peanut butter whiskey fudge brownies stacked on white plate, Bottle of peanut butter whiskey and shot glasses in back. White background.

The peanut butter filling is a mixture of peanut butter, butter, whiskey and powdered sugar. This yummy, boozy filling is scattered inside the brownie batter. The remaining peanut butter is used on its own to create a beautiful swirl on top.

Peanut Butter Whiskey – I am often asked is alcohol gluten-free? Even if made from a grain that contains gluten, distilled liquor is gluten-free. Gluten does not make it through distilling, so there’s no need to worry!

Peanut butter whiskey is sweeter than your average whiskey and is like dessert in itself. The combination of peanut butter and whiskey flavor is absolutely amazing. Whiskey has hints of vanilla and honey flavors making it an ideal pairing with PB and chocolate. I use Skrewball Peanut Butter Whiskey but there are other brands (Sheep Dog and Tennessee Legend) that will work too.

Peanut Butter – It’s important to use natural, (not no stir) peanut butter. The no-stir peanut butters have palm oil in them and don’t combine well with the other ingredients. So the ingredients in your peanut butter should be just peanuts and maybe salt. Santa Cruz Peanut Butter has a nice creamy texture.

Peanut butter whiskey fudge brownies on wood board. Small glass bowl with peanut butter on right. Bottle of peanut butter whiskey and white napkin with gray stripes in back.

When you first open a jar of natural peanut butter, there will most likely be a pool of oil on top. DO NOT pour it out! This is what makes the pb creamy. The least messy way to handle this situation is to pour the entire jar of pb along with the oil into a mixing bowl. Stir it with a fork until the oil is incorporated, then put it back in the jar.

Fudge Brownie Recipe

The brownie batter gets a double dose of chocolate from dark chocolate chips (or bars) and cocoa powder. The solid chocolate adds to the moist, fudgy texture of the brownies. For an allergy-free chocolate, Enjoy Life Dark Chocolate Morsels are my favorite. The cocoa powder assures that the bittersweet chocolate will be front and center.

The batter is also flavored with peanut butter whisky to make this a perfectly boozy treat.

The rest of the ingredients are just the basics – salt, eggs, sugar, butter and flour. King Arthur Gluten-Free Measure for Measure Flour is my go-to for gf recipes.

Baking the Brownies

These brownies work best in an 8″ square pan. A 9″ pan will work too, but the brownies will be a little thinner. I highly recommend greasing the pan AND lining it with parchment. Brownies have a tendency to stick to the pan and the parchment will make removal from the pan super easy. Here’s how to cut the parchment so that it will cover the bottom and sides of the pan:

overhead view of square baking pan on parchment paper.
parchment paper liner for square pan on white background with pink scissors in foreground.
overhead view of square metal pan with parchment paper liner
stack of 3 peanut butter whiskey brownies on white parchment. Small glass bowl woth peanut butter on right. White striped napkin and bottle of peanut butter whiskey in back.

Peanut Butter Whiskey Fudge Brownies (Gluten-Free)

Author: Janet Harlow
Course: Dessert
Cuisine: American
Servings: 12
These dark chocolate, fudge brownies are layered with a peanut butter, peanut butter whiskey filling and a peanut butter swirl top for the perfect sweet, salty and boozy dessert.
5 from 1 vote
Print Recipe Pin Recipe
Prep Time 20 mins
Cook Time 35 mins
Cooling time 1 hr

Recommended Products

  • King Arthur Gluten-Free Measure for Measure Flour
  • Enjoy Life Dark Chocolate Morsels

Ingredients
  

Peanut Butter Whiskey Filling

  • Β½ c natural peanut butter (NOT no-stir, no palm oil)
  • 2 Tbsp unsalted butter
  • ΒΌ c powdered sugar
  • 3 Tbsp peanut butter whisky
  • ΒΌ tsp salt

Brownie Batter

  • 6 oz bittersweet chocolate or ΒΎ c + 1 Tbsp dark chocolate chips
  • 12 Tbsp unsalted butter (ΒΎ c)
  • 1ΒΌ c sugar
  • 3 large eggs, room temperature
  • 2 Tbsp peanut butter whiskey
  • ΒΎ c gluten-free flour blend
  • ΒΌ c unsweetened cocoa powder
  • Β½ tsp salt

Peanut Butter Swirl Topping

  • ΒΌ c natural peanut butter (NOT no-stir, no palm oil) for swirl topping

Instructions
 

  • Preheat the oven to 350Β°F. Grease and line an 8" or 9" square baking dish with parchment. The parchment will make removing them from the pan MUCH easier,
    overhead view of square baking pan on parchment paper.

Peanut Butter Whiskey Filling

  • Place the peanut butter, butter and whiskey in a small microwave-safe bowl. Heat on high for 20 seconds.
  • Stir to combine. If the butter is not completely melted, heat another 10 seconds.
  • Stir in the the powdered sugar and salt.
  • Set aside.

Brownie Batter

  • Place the chocolate and butter in a large microwave safe bowl and heat on high for 1 minute. Stir. If the butter and chocolate are not completely melted, heat another 20-30 seconds and stir until the chocolate is melted.
  • Add the sugar and stir until the mixture is smooth.
  • Add the eggs and peanut butter whiskey and beat until combined.
  • Sift in the flour, cocoa powder and salt.
  • Stir until smooth.

Assemble

  • Pour Β½ of the batter into the pan.
  • Scatter spoonfuls of the peanut butter mixture on top.
    overhead view of square pan with brownie batter and mounds of peanut butter whiskey filling.
  • Top with the remaining batter.
  • Heat the 1/4 c of peanut butter for 15-20 seconds in the microwave. Use a spoon to drizzle stripes of peanut butter on top of the batter. Run a toothpick across the pb stripes to swirl.
    overhead view of square pan with brownie batter and strips of peanut butter. Toothpick being dragged across peanut butter.
  • Bake 33-38 minutes for an 8" pan or 28-32 minutes for a 9" pan or until set.
  • Cool the pan on a wire rack for 1 hour, then transfer to the fridge to cool completely.
  • These brownies will last at least 3 days at room temp in a sealed container. They can also be frozen wrapped individually in plastic then in a zip top bag.
Did you make this recipe?Let me know how it was! Tag @chefjanetk on Instagram.
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Posted In: Baked Goods, Dessert · Tagged: brownies, chocolate, peanut butter

Comments

  1. Nadira Banik says

    October 18, 2021 at 5:43 pm

    These brownies were to LJVE FOR!

    Reply
    • Janet Harlow says

      October 21, 2021 at 8:45 pm

      Thanks so much!

      Reply
  2. Timothy M Banik says

    October 18, 2021 at 7:34 pm

    5 stars
    From Tim, those were some of the most mouth watering brownies I have ever tasted!

    Reply

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