Pumpkin Pie Fudge

1 1/2 cups granulated sugar
2/3 cup evaporated milk
1/2 cup mashed pumpkin (canned)
2 tablespoons butter or margarine
1/4 teaspoon salt
1 1/2 teaspoons pumpkin pie spice
1 package vanilla flavored baking chips (12 ounces)
2 cups miniature marshmallows
1/3 cup chopped nuts (optional)
1 1/4 teaspoons vanilla extract

Using butter or margarine, lightly grease the sides and bottom of a medium saucepan. Place the sugar, evaporated milk, pumpkin, butter, salt, and pumpkin pie spice in the saucepan.

Stirring constantly over medium heat, bring the mixture to a boil and boil for 12 minutes. Remove from the heat and stir in the baking chips and marshmallows until melted. Stir in the nuts and vanilla.

Pour into an 8-inch square pan that has been lined with foil and greased. Chill mixture until set. Cut into small squares to serve. Cover and store in refrigerator.