Ingredients
Equipment
Method
Bake the cake
- Heat the oven to 350°F. Lightly coat two 9-inch round cake pans with nonstick cooking spray and line the bottoms with parchment paper.
- Whisk the all-purpose flour, granulated sugar, baking powder, and table salt in a large bowl.
- In a separate bowl, whisk the vegetable oil, egg whites, champagne, and pink gel food coloring until combined.
- Add the wet mixture to the dry mixture and beat on low just until combined, then beat on medium for 30 seconds.
- Divide the batter evenly between the pans and bake for 25–30 minutes, until the tops spring back lightly when touched and a toothpick comes out with a few moist crumbs.
- Cool the cakes in the pans for 10 minutes.
- Turn the cakes out onto wire racks, remove the parchment, and cool completely.
Make the buttercream and assemble
- Beat the softened unsalted butter in a large bowl on medium speed until creamy, about 2 minutes.
- Add the powdered sugar in several additions, beating on low until incorporated.
- Add the vanilla extract and heavy cream and beat on medium until fluffy.
- Set one cake layer on a serving plate and spread buttercream over the top.
- Add the second layer and frost the top and sides with the remaining buttercream.
Notes
For neat layers, let the cakes cool completely before frosting. Store covered in the refrigerator for up to 3 days; freeze frosted slices or unfrosted layers for up to 2 months. For a nonalcoholic option, use nonalcoholic sparkling wine in place of champagne.
