My mom started making this for us when we were in high school, I think. Anymore, it's not the holidays without it.
Combine in sauce pan:
1 cup semi-sweet chocolate chips
1 cup butterscotch chips
1 can sweetened condensed milk
Heat over med-low until chips are melted, stirring constantly.
2 cups chopped walnuts
2 cups mini-marshmallows
Spread in 8x8 pan. Cool in refrigerator until firm. Cut into small squares to serve.
It's the ONLY regular thing that I got to before Christmas this year. Now you can make it for New Year's, and start counting the days until next Christmas so you can make it again!