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Guinness Brownie Muffins

For a unique St. Patrick’s Day dessert recipe, try these Guinness Brownie Muffins. It may sound strange to put Guinness beer in a dessert, but the bitter, malty flavor complements the chocolate — and makes this a true St. Paddy’s Day treat

Guinness Brownie Muffins

These Boozy Guinness Chocolate Brownies are the moistest brownies ever, and they’re an awesome combination of cakey and fudgy. You won’t be able to stop eating them!
Prep Time30 mins
Cook Time35 mins
Cooling30 mins
Total Time1 hr 35 mins
Course: Dessert
Cuisine: Irish
Keyword: boozy brownies, Boozy Desserts, Guinness Brownie Muffins, Guinness stout, St. Patrick’s Day Treats
Servings: 12
Calories: 527kcal


  • 12-Cup Muffin Pan
  • Cooling rack
  • High-Heat Scraper
  • Glass Nesting Bowls
  • Measuring Cups/Spoons Set
  • Glass Liquid Measuring Cups
  • 9" Wire Whisk
  • #30 Scoop
  • 2-Quart Saucepan
  • Parchment Cupcake Liners



  • 1 Bottle Guinness stout (12 oz.)


  • 10 tbsps. Unsalted butter 
  • 2 cups Semisweet chocolate chips


  • 4 Eggs 
  • ¾ cup Sugar 
  • 1 tsp. Pure vanilla extract


  • 1 cup All-purpose flour 
  • 2 tbsps. Unsweetened cocoa powder 
  • 1 tsp. Instant espresso powder 
  • ¼ tsp. Table salt 
  • ¾ cup Semisweet chocolate chips


  • ½ cup Semisweet chocolate chips
  • 2 tbsps. Unsalted butter


  • Preheat oven to 350°. Line a muffin pan with liners.

The Brownies

  • Reduce Guinness in a saucepan over medium-high heat to ½ cup, about 10 minutes; let cool to room temperature.
  • Melt butter and 2 cups chocolate chips in a double boiler; stir in ¼ cup reduced Guinness, then cool slightly.
  • Whisk eggs, sugar, and vanilla into melted chocolate mixture.
  • Combine flour, cocoa, espresso powder, and salt; fold into chocolate mixture just until incorporated, then stir in ¾ cup chocolate chips.
  • Scoop batter (about ⅓ cup) into prepared liners. Bake brownies until tops crack and a toothpick inserted into centers comes out with only a few crumbs, about 35 minutes. Turn brownies onto a rack; let cool.

The Ganache

  • Melt chocolate chips and butter in a double boiler; stir in remaining 1/4 cup reduced Guinness.
  • Drizzle ganache over top of brownies.


Per brownie, Calories: 527

Nutrition Facts

1 servings per container

  • Amount Per ServingCalories527
  • % Daily Value *
  • Total Fat 31g 48%
    • Saturated Fat 19g 95%
  • Cholesterol 93mg 31%
  • Sodium 76mg 4%
  • Total Carbohydrate 61g 21%
    • Protein 8g 16%

      * The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

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      Written by Lisa Yarde

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