Easy Red Velvet Trifle Recipe

Ingredients (13)

• 4 ounces (1/4 cup) unsalted butter, softened, more for greasing
• 1/2 cup superfine sugar
• 1 teaspoon pure vanilla extract
• 1 medium egg
• 1/2 cup buttermilk, sour cream, or kefir
• 1/2 cup dark cocoa powder
• 1 cup all-purpose flour
• 1/2 teaspoon baking powder
• 1 teaspoon baking soda
• 1/2 teaspoon red food coloring
• 1 cup store-bought custard sauce, optional
• 1 cup heavy cream, lightly whipped
• 3 cups mixed blue and red berries, fresh or frozen