From my mom-
2 cups chocolate chips, 1 cup butterscotch chips
1 can sweetened condensed milk
Place in the top of a double boiler on low heat (too hot & the chocolate will seize up)
Cook w/o a cover on until you can stir them all together (put in 1&1/2 t. Vanilla & pinch of salt & 1 c. Chopped walnuts if you want). Pour into buttered 8x8 or 9x9 pan & refrigerate, there is a way to place on a flat surface on a piece of aluminum foil in the shape of a wreath & place a 1/2 of a walnut about every 3-4 inches & some green & red m & m's in groups of 3 for decoration. I used to do that for parties.
