Ingredients
- 1 cup salted butter (226 grams)
- 1 and 1/2 cups Guinness (or similar dark stout beer)
- 1 cup + 2 tbsp unsweetened cocoa powder (113 grams)
- 1 cup granulated sugar (210 grams)
- 1/2 cup light brown sugar, packed (110 grams)
- 1 and 1/2 large eggs, at room temperature
- 1 cup + 2 tbsp full fat sour cream (270 grams)
- 2 tsp vanilla extract
- 1 and 1/2 cup all-purpose flour, spooned & leveled (195 grams)
- 3 and 3/4 tsp baking soda
- 1/2 tsp espresso powder
- pinch of salt
- 1 and 1/4 cup salted butter (283 grams) for frosting
- 12 ounces cream cheese, softened at room temperature (339 grams)
- 5 and 1/2 cups to 6 cups powdered sugar (616 to 672 grams)
- 1 tsp vanilla extract
- 2 tbsp Guinness
Instructions
- Grease two 9-inch cake pans with shortening. Place parchment rounds in the bottom. Grease the parchment and pan sides, then flour the pans and tap out excess. Set aside.
- Preheat oven to 350°F.
- Melt 1 cup salted butter in a medium pot over medium-high heat.
- Turn heat down to medium and cook, stirring, until the butter browns.
- Pour the browned butter into a large bowl. Whisk in the Guinness.
- Add sugars and cocoa powder. Whisk until smooth.
- Add eggs, sour cream, and vanilla extract. Whisk until combined.
- Add flour, baking soda, espresso powder, and salt. Whisk until the batter is smooth.
- Divide batter between the prepared pans.
- Bake for 17–24 minutes, or until a toothpick in the center has moist crumbs.
- Let cakes cool in the pans for 10 minutes, then invert onto cooling racks.
- Make the frosting by melting 1 and 1/4 cup salted butter and browning it.
- Chill the browned butter slightly before mixing it with cream cheese.
- Beat cream cheese until creamy, then add cooled brown butter.
- Add powdered sugar gradually until desired consistency is reached.
- Mix in Guinness and vanilla extract last.
- Assemble the cake by layering and frosting as desired.
- Refrigerate if frosting is soft before serving.
Notes
Let browned butter cool slightly before mixing with cold ingredients. Cake can be made ahead and stored.
- Prep Time: 30 minutes
- Cook Time: 24 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian