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4.8 from 18 votes

Chocolate Guinness Cake with Irish Buttercream

Do you like dark, deep, rich chocolate? A moist, heavy and delicious cake, with notes of coffee topped with a dreamy buttercream. Well say hello to Chocolate Guinness Cake with Irish Cream Buttercream.

Prep Time
20 mins
Cook Time
20 mins
Total Time
1 hr 5 mins
Servings: 10 -12 slices
Calories: 649 kcal
Course: Dessert
Cuisine: American , British , Irish

Ingredients

  • 1 cup Guinness or dark stout, porter, room temperature
  • 17 tablespoons butter I used Kerrygold Irish butter, that's 2 sticks (8 oz) plus one tablespoon
  • ¾ cup unsweetened cocoa powder I used organic Dutch processed cocoa
  • 2 cups sugar I used all natural cane sugar, superfine or regular ok
  • ⅔ cup sour cream full fat - see note on baking with beer
  • 2 large eggs at room temperature
  • 1 tablespoon vanilla extract try my bourbon vanilla extract
  • 2 cups all purpose flour I used unbleached
  • 2 ½ teaspoons baking soda
Irish Cream Buttercream
  • 1 tick butter (4 ounces) I used salted butter, softened.
  • 1 1/2 cups powdered sugar sifted if lumpy
  • pinch kosher salt
  • 1 tsp vanilla extract
  • 2 tablespoons Irish cream liqueur or if desired, replace with heavy cream, whole milk or half & half
  • 1 tsp espresso powder optional, but yummy

Instructions

    Cup of Yum
  1. Preheat oven to 350°F (176° C) and butter, and line a 10" springform baking pan with parchment (invert pan, trace around, cut out, insert into pan). Lightly spray the parchment with oil or non-stick spray, then dust with a little cocoa powder (see video)
  2. Pour the Guinness (or other dark beer) into a large saucepan, adding the butter cut into slices. Heat until butter is melted. Once melted, whisk in cocoa powder and sugar, whisking gently until incorporated and dissolved. Whisk the sour cream, eggs and vanilla in a small bowl until creamy and smooth. Pour into the buttery beer batter, whisking until smooth. Finally, whisk in flour and baking soda. DO NOT OVERMIX, mix until combined, might be a few lumps and that's okay.
  3. Pour batter into greased and lined springform pan, if pan is really full, place on half sheet pan to protect the oven from spillage (see post for details). Bake on center rack in middle of oven for 45 minutes to 1 hour. Remove once toothpick inserted comes out without crumbs.
  4. Allow to cool completely in the spring form pan on a cooling rack, once cooled, cake may be wrapped and frozen until ready to frost.
Irish Cream Buttercream
  1. Add softened butter to bowl of a stand mixer (or hand mixer) fitted with a paddle or whisk attachment. Beat on medium-high speed for 2-3 minutes, until light and fluffy. With mixer on low or stir, slowly add powdered sugar, beat on low speed until mixed into butter, then increase speed to medium-high and beat for 1 minute, scrape down sides.
  2. Add in sea salt, vanilla and Irish Cream or Bourbon Cream (substitute with heavy cream, milk or half and half and try a teaspoon of espresso powder), beating on low speed until combined, then increase speed to high and beat until light and fluffy, about 3-4 minutes, stop and scrape down sides once or twice. Frost cooled cake, if not eating right away. Store covered in fridge until ready to eat, bring to room temperature before serving.

Notes

  • There are many more tips, fixes, and more info in the original post (above).  
  • Storage 
  • Store on the counter, covered for up to 3 days. Or in the fridge, for up to one week in an airtight container. Cake may be frozen when wrapped tightly in plastic wrap, then placed in an airtight baggie up to 3 months. Frosted or unfrosted. 
  • If freezing a frosted cake, place on a baking sheet in the freezer for one hour, then wrap it well and store in a baggie. Allow thawing on the counter until softened. 

Nutrition Information

Serving 1slice Calories 649kcal (32%) Carbohydrates 83g (28%) Protein 6g (12%) Fat 34g (52%) Saturated Fat 21g (105%) Polyunsaturated Fat 2g Monounsaturated Fat 9g Trans Fat 1g Cholesterol 122mg (41%) Sodium 521mg (22%) Potassium 173mg (5%) Fiber 3g (12%) Sugar 59g (118%) Vitamin A 1027IU (21%) Vitamin C 0.1mg (0%) Calcium 42mg (4%) Iron 2mg (11%)

Nutrition Facts

Serving: 10-12 slices

Amount Per Serving

Calories 649

% Daily Value*

Serving 1slice
Calories 649kcal 32%
Carbohydrates 83g 28%
Protein 6g 12%
Fat 34g 52%
Saturated Fat 21g 105%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 9g 45%
Trans Fat 1g 50%
Cholesterol 122mg 41%
Sodium 521mg 22%
Potassium 173mg 4%
Fiber 3g 12%
Sugar 59g 118%
Vitamin A 1027IU 21%
Vitamin C 0.1mg 0%
Calcium 42mg 4%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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