Melt butter in microwave

Pour melted butter across bottom of 9x13 glass baking pan (spread across entire bottom)

Press crushed gram crackers evenly across bottom of pan

Layer coconut, chocolate chips, marshmallows

Pour sweetened condensed milk evenly across top

Sprinkle m&m's evenly across top

Bake 375 20-30 minutes until light brown

Cool and serve

I prefer to put the entire pan in the refrigerator once cool for a few hours or even a day. They taste so much better when they are cold and firm.