Rainbow Butter Cake
["3/4 c. butter, softened", "1 c. plus 2 Tbsp. sifted granulated sugar", "2 large eggs", "1 tsp. lemon juice", "1/2 tsp. vanilla extract", "2 1/4 tsp. baking powder", "2 3/4 c. sifted cake flour", "1/2 c. milk"]
["Note:", "Have all ingredients at room temperature."]
["butter", "sugar", "eggs", "lemon juice", "vanilla extract", "baking powder", "cake flour", "milk"]