Skinny Chocolate Chip Cheesecake Bars

full-sheet graham crackers (or 3/4 cup graham cracker crumbs)

unsalted or salted butter, melted (or even melted coconut oil)

reduced fat brick-style cream cheese, softened to room temperature (do not use fat free)

Chobani Greek yogurt1

large egg whites

granulated sugar

all-purpose flour

fresh lemon juice

vanilla extract

mini chocolate chips