Source: The Flavors of Mackinac Cookbook
2 (12 ounce) package chocolate chips
1/2 cup chopped walnuts
1/4 cup butter, cut into pieces
1/2 teaspoon salt
1/2 teaspoon vanilla extract
1/4 teaspoon peppermint extract
2 cups granulated sugar
1 cup evaporated milk
12 large marshmallows, cut into halves
Combine chocolate chips, walnuts, butter, salt and flavorings in a bowl. Combine the sugar, evaporated milk and marshmallows in a saucepan. Bring to a rolling boil; reduce heat. Cook for 5 minutes, stirring constantly with a wooden spoon.
Pour over the chocolate chip mixture and mix well. Spread in a buttered 8-inch square dish. Let stand until set.
Yields 1 1/2 pounds.