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Easy Guinness Brownies

Prep Time15 minutes
Cook Time25 minutes
Total Time40 minutes
Course: Dessert
Servings: 12 brownies

Ingredients

Brownies

  • 1 18.3 oz Brownie mix
  • ⅓ cup vegetable oil
  • 2 eggs
  • ⅓ cup Guinness extra stout

Frosting

  • ½ cup unsalted butter softened
  • 2 ½ cups powdered sugar
  • 1 teaspoon vanilla extract
  • 3 tablespoon Guinness extra stout
  • sprinkles, if desired

Instructions

  • Preheat your oven to 350°F, then lightly grease a 9x9-inch baking pan. Set aside.
  • In a large bowl combine the brownie mix, vegetable oil, egg and Guinness. Mix until well combined.
  • Pour the batter into the prepared pan and smooth with a spatula. Bake in the preheated oven for 25-30 minutes, until the brownies are set, and a toothpick inserted into the center of the brownies comes out with a few moist crumbs. Cool completely.
  • Add the butter to a large bowl and beat with an electric mixer until creamy. Add in the vanilla extract and Guinness and beat until just combined. Slowly add in the powdered sugar and continue beating until frosting is fluffy.
  • Spread the frosting evenly over the cooled brownies. Add sprinkles if desired. Cut and serve the brownies.
  • Store the leftovers covered in the fridge for up to 4 days.