Guinness Stout Chocolate Cake
Rich chocolate cake loaded with Guinness flavor and finished with a marshmallow fluff.
Equipment
- Hand Mixer or
- 1 Food Scale optional for more accurate measurements
- Bowls, measuring cups and spoons
- 2 8" Cake Pans or use 7" cake pans if you wish for a taller cake
- 1 Cake platter
- 1 Offset metal spatula
- 1 Saucepan optional - if making the simple syrup
Ingredients
Chocolate Guinness Cake
- ¾ cup Cocoa Powder
- 2 cups All Purpose Flour
- 2 cups Granulated Sugar
- 2 Tablespoon Cornstarch
- 2 teaspoons Baking Powder
- ½ teaspoon Baking Soda
- ¾ Cup Vegetable or Canola Oil
- 4 Large Eggs Room temperature
- 1 ¼ Cup Guinness Stout Room temperature
Simple Syrup
- ¾ Cup Guinness Stout
- ¾ Cup Granulated sugar
Buttercream
- 1½ Cup Unsalted butter Softened
- 16 Ounces Jar of Marshmallow Fluff
- 5 Cups Powdered sugar
- ¼ Cup Whole milk or Guinness stout using Guinness will add more stout flavor to the buttercream
Decorations - use any decorations to suit your theme (e.g. sprinkles, drizzle a glaze, candy shamrocks, etc...)
Instructions
Guinness Chocolate Cake
- Preheat oven to 350℉ / 177℃.
- Prepare two 8" round cake pans by lining the bottom with parchment paper or greasing the pans. Note: use 7" cake pans if you wish for a taller cake.
- Combine flour, cocoa powder, sugar, cornstarch, baking powder and baking soda in a mixing bowl. (note: the cake batter may be mixed by hand or using an electric mixer)
- Add oil and eggs. Mix until combined.
- Slowly pour Guinness into bowl while continuing to mix, scraping the bowl occasionally. The batter should be smooth.
- Divide batter between the two prepared cake pans.
- Bake for 35 - 40 minutes, or until cake is fully risen and a toothpick inserted in the center of the cake comes out clean.
- Place cakes on a rack and allow to cool completely before unmolding. Unmold by running an offset spatula or knife around the inside of the cake pan and flip the pan over onto a platter.
- Carefully trim the dome off of each cake to create a flat surface. Then, slice each cake in half horizontally for a total of 4 layers. Set the individual layers aside.
Simple Syrup (optional)
- Place granulated sugar and Guinness in a medium-sized saucepan. Bring mixture to a low boil, stirring often until the sugar is melted.
- Set aside and cool to room temperature.
Buttercream
- Place marshmallow fluff and softened butter in the bowl of a stand mixer (note: a hand mixer may also be used).
- Mix on medium speed until well combined (approximately 2 - 3 minutes).
- Add powdered sugar and milk (or Guinness if using) to mixing bowl.
- Turn on mixer to low speed. Gradually increase mixer to medium speed and mix for 2 minutes. Scrape down the mixer with a rubber spatula. Mix for another minute on medium-high speed.
Assemble Cake
- Place one cake layer on a serving platter. If using simple syrup, brush 3 - 4 tablespoons evenly over the cake layer. Spread a smooth, even ¼-inch layer of marshmallow buttercream on top.
- Gently place the second cake layer on top, ensuring it is centered and level. Brush with simple syrup if using. Spread a ¼" layer of marshmallow buttercream on top. Repeat the process for the remaining two cake layers.
- Cover the top and sides of the cake with a smooth layer of marshmallow buttercream, ensuring even coverage for a polished finish.
- Decorate cake as desired. For my design, I pressed sprinkles along the bottom edge, drizzled a green glaze over the top, and finished with buttercream swirls and candy shamrocks for a festive touch.
Video
Notes
- To keep your Guinness chocolate cake fresh, store it in an airtight container in the refrigerator for up to five days. When you're ready to serve it, take the cake out about an hour beforehand so it can warm up to room temperature. This helps bring out its rich flavor and soft texture.
Nutrition
Calories: 608kcalCarbohydrates: 126gProtein: 3gFat: 32gSaturated Fat: 15gPolyunsaturated Fat: 8gMonounsaturated Fat: 8gTrans Fat: 1gCholesterol: 52mgSodium: 104mgPotassium: 96mgFiber: 2gSugar: 56gVitamin A: 609IUVitamin C: 0.01mgCalcium: 49mgIron: 2mg
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