1/2 cup milk
1/2 cup butter
1/2 cup firmly packed brown sugar
1/2 cup granulated sugar
1/8 teaspoon salt
1 teaspoon vanilla extract
2 cups confectioners sugar
1/2 cup nuts (optional)

Mix milk, butter, brown sugar, granulated sugar and salt in heavy pan. Cook at medium heat until boiling. Boil exactly 6 minutes, stirring constantly. Remove from heat and add vanilla extract and confectioners sugar. Beat with mixer until smooth and thick. Add nuts, if desired. Pour into a buttered pan and freeze 20 minutes. Cut into pieces.

Makes approximately 1 pound of fudge.

Peanut Butter Mackinac Island Fudge
Reduce butter to 1/4 cup and add 1/2 cup peanut butter.

Chocolate Mackinac Island Fudge
Use basic recipe, adding 1/2 cup cocoa with the confectioners sugar.