Ingredients
– 2 ¼ cups all-purpose flour (270g)
– ¼ cup corn starch (35g)
– 1 ¼ cup granulated sugar (250g)
– 2 teaspoons baking powder
– ½ teaspoon salt
– ½ cup unsalted butter, room temperature (113g)
– ¼ cup vegetable oil (60mL)
– 3 large eggs, room temperature
– 2 egg yolks
– 1 tablespoon vanilla extract (15mL)
– 1 cup buttermilk (240mL)
– 1 ¼ cup unsalted butter (1 cup room temperature plus ¼ cup melted)
– ¼ cup cocoa powder
– ½ teaspoon salt (adjust to taste)
– ½ cup milk, divided
– 1 pound powdered sugar (450g) (approx. 4 ½ cups packed)
– ⅓ cup semisweet chocolate
Instructions
1-Preheat oven to 350°F (175°C): Butter and flour three 6-inch round cake pans.
2-Whisk together all-purpose flour, corn starch, baking powder, and salt; set aside.
3-Cream unsalted butter and sugar until light and fluffy.
4-Mix in vegetable oil and vanilla extract; scrape the bowl down.
5-Add eggs one at a time, mixing each until incorporated; scrape the bowl down again.
6-Add flour mixture and buttermilk in alternating batches, mixing on low until just combined.
7-Pour batter evenly into prepared pans and bake for about 30 minutes, or until centers are set and springy.
8-Let cake layers cool in pans for a few minutes, then invert onto wire racks to cool completely.
9-Melt ¼ cup butter; mix in cocoa powder and set aside.
10-Melt semisweet chocolate with ¼ cup milk and set aside.
11-Beat 1 cup room temperature butter until creamy.
12-Add cocoa butter mixture, mix well, scrape down bowl, mix again.
13-Add powdered sugar, mix on low speed.
14-Pour in melted chocolate mixture and drizzle in remaining ¼ cup milk gradually; scrape bowl often and mix until smooth and silky.
15-Once cooled, pipe or spread buttercream onto the first cake layer. Add the next layer and repeat. Cover the assembled cake with remaining buttercream, using a spatula to create a rustic swoopy texture.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
🎯 Substitute 2 ½ cups cake flour for the all-purpose flour and corn starch for a finer texture.
📏 Use cake strips or homemade foil/paper towel strips around pans to achieve flat, moist layers.
🌡️ Allow the cake to warm to room temperature before serving for the best flavor and texture experience.
- Prep Time: 25 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 1 slice
- Calories: 674 kcal
- Sugar: 61g
- Sodium: 239mg
- Fat: 36g
- Saturated Fat: 23g
- Carbohydrates: 84g
- Fiber: 2g
- Protein: 6g
- Cholesterol: 147mg
