Boozy desserts may just be the top tier of desserts. They accomplish the daunting task of making alcohol taste great. Brownies are the ideal choice because they showcase chocolate so perfectly. Slutty brownies are a thing of the past because there is no better addition to your favorite brownie mix than your favorite alcohol. Whether you choose to use an easy boxed variety or your favorite from-scratch recipe, have fun experimenting with this simple boozy rum brownie recipe by substituting in your spirit of choice

Boozy Brownies with Rum Buttercream Icing

  • Prep Time:10 mins
  • Cook Time:40 mins
  • Total Time:50 mins
  • Servings:16
  • Easy


  • 1 brownie mix
  • 1 egg
  • 1/4 cup water
  • 1/3 cup vegetable oil
  • 1/4 cup + 5 tablespoons rum divided
  • 1 cup unsalted butter
  • 2 cups powdered sugar
coffee, brownie, candy, sweet, cake, cream, chocolate
Caroline Early
  • Step 1

    Follow the instructions on your favorite box of brownie mix, or use a recipe from scratch. Mine said to combine the water, vegetable oil, and egg in a medium sized bowl. Don't forget to preheat the oven.

    cream, yolk, flour, egg yolk, egg
    Caroline Early
  • Step 2

    Slowly add brownie mix until fully combined. Make sure you don't see any lumps.

    cake, flour, milk, coffee, cream, sweet, chocolate
    Caroline Early
  • Step 3

    Add 2 tablespoons rum and mix well. Grease a pan and pour the batter into the pan. If you're really into boozy baking, now might be a good time to sneak a sip of the rum.

    Caroline Early
  • Step 4

    Follow the baking instructions on your brownie recipe. Mine were in the oven for 40 minutes at 350°F.

    meat, broil, steak, pork, beef, barbecue
    Caroline Early
  • Step 5

    As soon as you remove the brownies from the oven, brush 1/4 cup rum over the top to keep the brownies boozy and moist.

    pork, barbecue, beef, meat
    Caroline Early
  • Step 6

    While the brownies are cooling, make the rum buttercream icing. Mix butter and 3 tablespoons rum until fully combined, and then slowly add powdered sugar. Be careful that the powdered sugar doesn't fly out of the mixing bowl and make a mess.

    dough, egg, butter, batter, flour, milk, cream, dairy product
    Caroline Early
  • Step 7

    Spread icing on the cooled brownies and serve.

    pastry, mousse, candy, brownie, sweet, cake, cream, chocolate
    Caroline Early