Can'T Fail Fudge - cooking recipe

Ingredients

2 1/4 cups sugar
1/4 cup butter or 1/4 cup margarine
3/4 cup evaporated milk
12 large marshmallows (or 1 jar marsh. creme)
1 cup chocolate chips (I like to put 1/2c semi-sweet, 1/2 c white chocolate)
1/2 cup chopped walnuts (optional)
1 teaspoon vanilla

Preparation

Mix first 3 ingredients in a 2-quart saucepan over medium heat.
Bring to a boil stirring entire time. Boil until candy thermometer hits 234 degrees (or exactly 5 minutes boiling), stirring entire time.
Remove from heat and add remaining ingredients. Stir until chocolate and marshmallows are dissolved.
Pour in buttered 8x8 pan.
Chill 30 minutes, cut with buttered knife.
Chill again until set.