Place butter in a 13x9" pan. Place pan with butter in oven at 350º. Butter can melt while oven is preheating. Keep an Eye on it..
Crush graham crackers in a food processor. When butter is melted. Remove from oven. Sprinkle graham crackers over melted butter. Press lightly with back of spoon.
Pour sweetened condensed milk over crumbs. Sprinkle half chocolate chips, half of the M&M's and half of the nuts.sprinkle coconut on top followed by remaining M&M's, chocolate chips, nuts and if using sprinkles . Sprinkle these as well.
Bake 25 - 30 minutes or until bars are lightly brown. Remove from oven . Allow to cool. Cut into bars . Enjoy. .. :-)
