1 stick butter
1 (10 1/2 oz.) pkg. marshmallows
1 (12 oz.) pkg. chocolate chips
1 tbsp. vanilla
5 c. cornflakes
1/2 c. nuts, chopped

Melt 1 stick butter, 1 package marshmallows and 1 package chocolate chips over low heat. Remove from heat and add 1 tablespoon vanilla. Pour over 5 cups cornflakes and 1/2 cup chopped nuts. Mix thoroughly. Pour into 9 x 13-inch Pyrex pan. Cool and cut into squares.