Pockets of Lemon Cake - Snowy the Mouse

Ingredients

• 1 (18.25-oz.) pkg. pudding-included white cake mix
• 1 1/4 cups water
• 1/4 cup oil
• 3 egg whites
• 1 (15.75-oz.) can lemon pie filling
• 1 (16 oz.) can lemon creme frosting
• 1 (8 oz.) container frozen whipped topping, thawed