Ingredients

• 1 cup butter or margarine, softened
• 2 cups sugar
• 3 eggs
• 2 teaspoons grated lemon peel
• 1 teaspoon vanilla extract
• 3 1/2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 2 cups sour cream
• FROSTING:
• 3 tablespoons butter or margarine, softened
• 2 1/4 cups confectioners' sugar
• 2 tablespoons lemon juice
• 3/4 teaspoon vanilla extract
• 1/4 teaspoon grated lemon peel
• 1 tablespoon milk