Step 1

Optional, reserve 1 - 2 tablespoons of sweetened condensed milk.

Step 2

Mix together graham cracker crumbs and melted butter, and press firmly onto the bottom of a parchment lined or greased 9x13 inch casserole dish.

Step 3

Pour the can of sweetened condensed milk evenly all over the graham cracker crumbs.

Step 4

Layer the chocolate chips, butterscotch chips, coconut flakes and walnuts and press down firmly. Drizzle remaining sweetened condensed milk over top, if desired.

Step 5

Bake at 350F for 25 minutes, until coconut has started to turn a golden brown. Allow to cool completely before cutting.