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Guinness Stout Brownies

Brownies made with beer.
Course Dessert
Cuisine American
Keyword brownies, Guinness, Stout
Prep Time 15 minutes
Cook Time 30 minutes
Coolinh 2 hours
Total Time 2 hours 45 minutes
Servings 36
Author Cookie Madness


  • 1 cup all-purpose flour (130 grams)
  • 3/4 cup unsweetened cocoa powder (70 grams)
  • 1/4 teaspoon salt
  • 6 tablespoons unsalted room temperature butter cut into cubes
  • 8 ounces dark or bittersweet chocolate, chopped (460 grams)
  • 3/4 cup white chocolate chips (114 grams)
  • 4 large eggs
  • 1 cup superfine or granulated sugar (200 grams)
  • 1-1/4 cups 10 ounces Guinness Extra Stout beer**
  • 1 cup semisweet chocolate chips
  • 1/8 cup about confectioners' sugar for dusting


  • Preheat the oven to 375 degrees F. Line a 9 x 13-inch baking pan with nonstick foil or grease and line with parchment paper.
  • In a medium bowl, whisk together flour, cocoa powder, and salt until evenly combined.
  • Melt butter, bittersweet chocolate and white chips in a double-boiler over very low heat, stirring constantly until melted. Remove from heat. Alternatively, you may do this in the microwave, microwaving on high and stirring every 30 seconds.
  • In a large mixing bowl, beat eggs and sugar on high speed until light and fluffy, about 3 minutes. Add melted chocolate mixture, beating until combined.
  • Beat reserved flour mixture into melted chocolate mixture. Whisk in Guinness stout beer. The batter will seem a bit thin, and will lighten a bit from the fizziness of the beer. Make sure that the batter is cool (not warm from the chocolate) then fold in the chips.
  • Pour into prepared baking pan. Bake 25 to 30 minutes on center rack in the oven, until a toothpick inserted in the center comes out almost clean.
  • Let brownies cool, uncovered, to room temperature. Dust with confectioners' sugar before serving.


There was a note saying the beer should be at room temperature, but I didn't bother bringing it to room temperature and nothing terrible happened.