Guinness Chocolate Cupcakes with Mocha Guinness Buttercream

Name: Guinness Chocolate Cupcakes with Mocha Guinness Buttercream
Prep time: 35 min
Cook time: 20 min
Total time: 55 min
Cuisine: American
Ingredients: one 12-ounce (355ml) bottle Guinness beer; 1 cup (125g) all-purpose flour (spooned & leveled); 1/2 cup (41g) unsweetened natural cocoa powder; 1 and 1/2 teaspoons espresso powder; 3/4 teaspoon baking soda; 1/4 teaspoon salt; 1/2 cup + 1 Tablespoon (135ml) vegetable or canola oil; 1 cup (200g) packed light or dark brown sugar; 2 large eggs, at room temperature*; 3/4 cup (180g) full-fat sour cream, at room temperature*; 2 teaspoons pure vanilla extract; 2 Tablespoons reduced Guinness from step 1; 2 teaspoons espresso powder; 1 and 1/4 cups (282g) unsalted butter, softened to room temperature; 4 and 1/2 cups (550g) confectioners’ sugar; 1 Tablespoon (5g) unsweetened natural cocoa powder; 1 Tablespoon (15ml) milk; 1 teaspoon pure vanilla extract; pinch of salt, to taste

Instructions

Prep:35minCook:20min

The BEST way to impart real Guinness flavor into chocolate cupcakes is to reduce it down on the stove first. This packs in flavor without altering the cupcake's texture. Read the recipe in full before beginning.

Updated at: Wed, 29 Oct 2025 09:18:52 GMT