Ingredients
FOR CAKE:
3 + 1/4 cups (390g) all-purpose flour
2 teaspoons baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1/2 cup (1 stick / 115g) unsalted butter, softened to room temperature
1/2 cup (120mL) vegetable oil
1 + 3/4 cups (350g) granulated sugar
2 large eggs, at room temperature
2 large egg whites, at room temperature
3 teaspoons LorAnn Butter Vanilla Bakery Emulsion
3/4 cup (180g) full-fat sour cream
1/2 cup (120mL) milk
LorAnn Blue Liquid Gel Food Coloring
FOR BUTTERCREAM FROSTING:
1+ 1/2 cups (340g) unsalted butter, softened to room temperature
6 cups (780g) powdered sugar
1/2 teaspoon salt
2 teaspoons LorAnn Butter Vanilla Bakery Emulsion
3 to 6 tablespoons milk
LorAnn Blue Liquid Gel Food Coloring