Preheat oven to 350-degrees F. Spray a 9- x 13-inch baking pan with non-stick cooking spray; set aside.

In a medium mixing bowl, stir together the graham cracker crumbs and the melted butter until well blended. Press mixture evenly into the bottom of the prepared baking pan.

Add remaining ingredients (except for the sweetened condensed milk) in layers, in the order listed, sprinkling each ingredient evenly over the previous layer.

Pour the sweetened condensed milk evenly over everything.

Bake for 25 minutes. Allow to cool in pan, about 2 hours, then cut into 24 equal-sized bars. Store in an airtight container for up to 4 days. Bars will keep longer than 4 days, but may not taste quite as fresh.

Enjoy!