Guinness Brownies

These brownies are wonderfully rich, fudgey and the addition of Guinness adds a unique flavor.

looking at a plate of Guinness brownies stacked on top another, with a pour of Guinness in the background
Prep Time:
25 mins
Cook Time:
45 mins
Cool Time:
1 hrs
Total Time:
2 hrs 10 mins
16 brownies


  • cooking spray

  • bottle Guinness (1 1/3 cups)

  • 3/4 cup unsalted butter

  • 3/4 cup granulated sugar

  • 1 1/2 cups semi sweet chocolate chips

  • 3 large eggs, at room temperature, lightly beaten

  • 1 teaspoon vanilla extract

  • 1 cup all purpose flour

  • 1/2 teaspoon kosher salt


  1. Gather all ingredients.

    All ingredients gathered to make Guinness brownies.

    Dotdash Meredith Food Studios

  2. Preheat the oven to 350 degrees F (175 degrees C). Spray a 9x9-inch square baking pan with cooking spray and line with parchment paper, leaving a 2-inch overhang on one side.  

  3. Heat Guinness in a medium saucepan over high heat until boiling. Skim any foam from the top. Reduce to a simmer over medium-low heat and cook until liquid has reduced to 1/2 cup, 12 to 15 minutes. Transfer to a heatproof bowl or container. Set aside.

    Guinness heated in a saucepan until boiling.

    Dotdash Meredith Food Studios

  4. Heat butter in the same saucepan over medium heat until melted, about 4 minutes. Add sugar and cook, whisking constantly, until mixture is thickened and sugar is mostly dissolved, about 2 minutes.


  5. Remove from heat, add chocolate, and whisk together until smooth, about 1 minute. (Mixture will be slightly grainy.) Gradually add reduced Guinness, whisking constantly, until batter is glossy and dark, about 2 minutes.

    Chocolate added to butter mixture and combined, then Guinness added until mixture is glossy and dark.

    Dotdash Meredith Food Studios

  6. Transfer chocolate mixture to a large bowl, cool slightly, stirring occasionally, about 10 minutes. Add eggs slowly, stirring to combine after each egg, about 30 seconds. Add vanilla, stirring until combined, about 30 seconds.

  7. Combine flour and salt in a medium bowl and whisk together. In two batches, gently stir flour mixture into chocolate mixture until just combined or until no clumps remain, about 1 minute. Pour batter evenly into the prepared pan.

    Flour and chocolate mixture combined until there are no clumps.

    Dotdash Meredith Food Studios

  8. Bake in the preheated oven until a toothpick inserted into the center comes out clean, 25 to 30 minutes. Remove from the oven and let cool completely, about 1 hour. When cool, remove from pan and place on a cutting board, slice into squares and serve. Store in the refrigerator in an airtight container for up to one week.

Nutrition Facts (per serving)

246 Calories
15g Fat
26g Carbs
3g Protein
Nutrition Facts
Servings Per Recipe 16
Calories 246
% Daily Value *
Total Fat 15g 19%
Saturated Fat 9g 43%
Cholesterol 58mg 19%
Sodium 57mg 2%
Total Carbohydrate 26g 10%
Dietary Fiber 1g 4%
Total Sugars 18g
Protein 3g
Vitamin C 0mg 0%
Calcium 15mg 1%
Iron 1mg 6%
Potassium 89mg 2%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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