Grandma Bonham's Rocky Walnut Fudge

1 1/2 c mini marshmallows, frozen
2 1/2 pkg (8 oz. each) Hershey's milk chocolate bars, broken
1 pkg.(12 oz.) Nestle's semi-sweet chocolate chips
1 c butter, in chunks
4 c sugar
1 can(13 oz.) evaporated milk
2 1/2 c mini marshmallows
2 tsp. vanilla

Freeze 1 1/2 c mini marshmallows in plastic bag. Mix broken chocolate bar, chocolate chips and butter. Set aside. In a sauce pan, mix the sugar, evaporated milk and 2 1/2 c chocolate mixture. Beat by hand until chocolate melts and mixture is smooth. Stir in the frozen marshmallows, nuts and vanilla. Use Pam to coat bottom of pans and pour mixture into a 9x13 inch and 8x8 inch pan. Cover and refrigerate. Cut when cool. Yield 10 dozen pieces.

(***Freezes really well for up to 3 months. Grandma uses Glad press and seal wrap and wraps the fudge in chunks and then wraps in foil and saves in the fridge.)