Cream-Lined Cake - Mid-Century Menu

Ingredients

• 1 ¾ cups sifted flour
• 3 tsp baking powder
• 1 tsp salt
• 1 cup sugar
• ½ cup butter or shortening
• ¾ cup whole milk
• 3 unbeaten egg whites
• 1 tsp vanilla
• 2 tsp butter
• ⅛ tsp salt
• 2 ½ cups sifted confectioner's sugar
• 1 egg white
• 4 tbsp cream
• 2 drops green food coloring