Butterscotch Cheesecake Bars
Ingredients : cooking spray 1 (11 ounce) package butterscotch chips 1/2 cup butter 2 cups graham cracker crumbs 1 (8 ounce) package cream cheese, softened 1 (14 ounce) can sweetened condensed milk (such as Eagle Brand(R)) 1 egg 1 teaspoon vanilla extract