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Fudgy Whiskey Brownies & Peanut Butter Frosting

July 26, 2020 (Last updated September 23, 2022) · Nicole Triebe

Incredibly decadent and delicious, these whiskey brownies are topped with a peanut butter buttercream that makes these a dessert to die for!

If you looked up the word decadent in the dictionary, a picture of these whiskey brownies would appear right next to it! I love this brownie recipe because it’s incredibly easy to make from scratch, so anytime you have a craving for something boozy and sweet, you can easily whip up a pan of these delicious treats! Everyone needs a brownie sometime, am I right? These boozy chocolate brownies are my all-time favorite! They’d make great party desserts, too!

I’m proud to partner with Skrewball Peanut Butter Whiskey to make this fudgy brownie recipe. When the owner first developed this delicious whiskey by combining two of his favorites —peanut butter and whiskey many snubbed their nose at this idea. But once you have the first taste, you will see why it became their signature shot! I loved this unique flavor combination and knew it would be the perfect addition to a great recipe for brownies from scratch! You can pick up your own bottle of Skrewball Peanut Butter Whiskey at your local Binny’s, or find another location here!

What I love most about these brownies made from scratch is that they’re made with basic pantry staples. As long as you have a decently stocked baking cabinet, you should be able to make these any time you want without needing to make a special trip to the store! It takes a couple of extra steps to make whiskey brownies it from scratch but it tastes a million times better and once you try it you will never go back to boxed brownies again! This is boozy brownie heaven right here!

What you need to make these whiskey brownies


Dutch-process cocoa powder

Dutch process cocoa has been processed to help neutralize the acid in natural cocoa powder. Because of this, it has, according to some taste buds, a richer, smoother more pure chocolate flavor in this fudgy brownie recipe

  • Molasses
  • Eggs
  • Room temperature unsalted Butter
  • Dutch-process cocoa powder
  • Skrewball Whiskey
  • Chocolate chips
  • Flour
  • Salt
  • Peanut Butter

Step By Step Instructions To Make These Boozy Chocolate Brownies

Start by melting the butter in a double boiler over medium heat. If you want to make this a one-bowl recipe, melt the butter in a medium bowl, and the same bowl you’ll be mixing the rest of the ingredients in. To the melted butter, add your chocolate chips, or chopped chocolate and stir until all the chocolate has melted and the mixture is smooth.

Next, add the molasses, sugar and cocoa to the melted chocolate and stir until fully combined. Then add the eggs, vanilla extract, flour, and salt; mix and you’re done! No stand mixer needed! Make sure you don’t over mix these whiskey brownies! Over-mixing the brownie batter will cause the gluten in the flour to develop more, making the brownies tough or hard depending on over-mixed the dough is. Usually, with baking as long as the batter is thoroughly combined, that is all the mixing you really need!

whiskey brownie step by step process

Prepare a 9 x 13″ pan by either lining the baking dish with parchment paper, spray it with cooking spray or a little oil, and then add your batter to the prepared pan. If you have a 8×8 square pan, decrease the temperature by 25 degrees and increase the time to 50 minutes. When the baking is all done, run a knife around the edge of the brownies immediately when they come out of the oven, let them cool, then lift the parchment paper to take them out. They shouldn’t stick ever again! And your whiskey brownies are ready for frosting and easy slicing.

whiskey brownies in pan frosted and sliced with bottle of whiskey laying beside the pan

Want to add even more peanut butter to these brownies with whiskey? Chop up peanut butter cups and add them on top of the frosting!

Click here to check out the short web story for this recipe!

whiskey brownies sliced on cooling rack

Additional recipes to try

Loved these brownies with whiskey? Check out my double chocolate chip cookies!

Pair a whiskey brownie with an ice cream sundae board!

whiskey brownies on cooling rack with cut brownies on plates with whiskey in glasses

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Whiskey Brownies with Peanut Butter Frosting

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 5 reviews
  • Author: Nicole Triebe
  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Total Time: 45 minutes
  • Yield: 16 1x
  • Category: Dessert
  • Method: Bake
  • Cuisine: American


Incredibly decadent and delicious, these whiskey brownies are topped with a peanut butter buttercream that makes these a dessert to die for!




For the brownies:

1/2 cup dutch processed cocoa powder

4 oz chocolate chips or chopped chocolate

1 cup butter

2 cups sugar

2 tbl molasses

4 eggs

1/4 cup Skrewball Peanut Butter Whiskey

1 tsp salt

2 tsp vanilla extract

1 cup flour

For the buttercream:

1 cup butter, softened

3 cups powdered sugar

1/2 cup peanut butter

4 tbl Skrewball Whiskey


Melt chocolate and butter in a large bowl over a double boiler.  Stir until all the chocolate has melted and the mixture is smooth.  

Add the molasses, sugar and cocoa and stir until fully combined.

Add the eggs, whiskey, vanilla, flour, and salt; mix until just combined.  Do not overmix. 

Prepare a 9×13″ glass or ceramic baking dish with cooking spray and pour batter into pan.  

Bake at 350 degrees for 35 minutes.  Do not overbake. 

Remove from the oven and cool.

Make the buttercream by combining butter, powdered sugar, Skrewball whiskey and peanut butter in a stand mixer and whip on high with a paddle attachment for 5 minutes.  

Frost with buttercream, slice and serve. 


  • Serving Size: 1
  • Calories: 110
  • Sugar: 13.6g
  • Sodium: 35.2mg
  • Fat: 4.9g
  • Saturated Fat: 2.7g
  • Unsaturated Fat: 1.3g
  • Trans Fat: 0
  • Carbohydrates: 15.1g
  • Fiber: .3g
  • Protein: .9g
  • Cholesterol: 17.6mg

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  • Reply Ellen July 31, 2020 at 3:24 am

    Directions don’t say when to add the PB whiskey to the brownie batter! I assume with the wet ingredients, before adding the flour and salt!

    • Reply Nicole Triebe July 31, 2020 at 3:41 am

      You assume right! So sorry, directions have been updated

  • Reply Amy August 10, 2020 at 1:17 am

    The perfect reason to buy peanut butter whiskey! I made these while some family was in town and they loved them! I already have other family who missed out but heard about how amazing they were asking when I plan to make more! Incredibly rich and chocolatey! My eyes were absolutely bigger than my stomach when I was cutting slices! ????

  • Reply Amber September 8, 2020 at 5:33 pm

    This recipe is perfect for chewy brownies. The Skrewball flavor is just right in this, it’s not strong. It’s great with the icing too. I had to “taste” it before adding the icing. I would eat it with or without the icing. I have already made this twice, to the recipe.

  • Reply Anastasia Ryan November 23, 2020 at 5:06 pm

    So good! Thank you!

  • Reply Lainey F December 7, 2020 at 10:20 pm

    Has anyone tried this gluten free? Wanting to make it for a little group of friends but one has a gluten intolerance.

  • Reply Stacy October 30, 2021 at 2:38 am

    Do you have to use molasses or can you use something else?

    • Reply Nicole Triebe December 7, 2021 at 1:53 am

      You can omit it if you’re not a molasses fan.

  • Reply Dawn April 4, 2022 at 4:52 pm

    Made these over the weekend and they were very delicious. I made the recipe exactly as written and everybody loved them.

  • Reply Kenneth Holland October 4, 2022 at 6:58 pm

    Made these over the weekend for a brunch of 6 people. All were gone and I had planned to have at least 4 to 6 to have as my late night snacks through the week. 😂 Got 3 text asking for recipe. Thank you for a great whiskey brownie recipe. Perfection.

  • Reply Ashleigh C. December 15, 2022 at 10:29 am

    This is the most delicious brownie recipe I have ever made. I chose to not add the frosting because I felt the brownies were perfect without it.

  • Reply Julia White December 7, 2023 at 7:48 pm

    Can these be made ahead of time? How long will they keep and should they be kept in fridge?

    • Reply Nicole Triebe December 7, 2023 at 8:02 pm

      Yes they can! If kept in an air tight container in the fridge they should last one week. Enjoy!

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