Ingredients

• 1 box lemon cake mix (preferably with pudding in the mix)
• 8 oz cream cheese, softened
• 1/2 cup butter (1 stick), melted
• 1 can lemon pie filling (21 oz)
• 1 cup sour cream
• 1/2 cup sugar
• 1 tsp vanilla extract (optional)
• 1 tbsp lemon zest (for extra zesty flavor)