• 1 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 3/4 cup butter, softened at room temperature
• 2 teaspoons vanilla extract
• 3/4 cup sour cream, room temperature
• 3 cups buttercream, tinted yellow
• 2 cups yellow candy melts
• 2 feet small bubble wrap