Lemon Pie Bars with a Cream Cheese Frosting

INGREDIENTS

box (16.5 ounces) lemon supreme cake mix

large eggs

1/2 cup

unsalted butter (at room temperature)

1 tsp

vanilla extract

1 can

lemon pie filling (22)

4 oz

cream cheese (softened)

1/2 cup

unsalted butter (softened (do not melt))

2 cups

powdered sugar

1 tsp

vanilla

2 tbsp

heavy cream (optional)