Easy Fudge

Feel like some fudge today? Who wouldn't? Mmmmm...

Easy Fudge
1-3/4 cups sugar
2/3 cup evaporated milk
2 T butter
Dash of salt
1-1/2 cups semi-sweet chocolate chips (I found that is important. I used milk chocolate and it was good, but really sweet.)
about 20 quartered or mini marshmallows
1/2 cup chopped walnuts
1 tsp vanilla

In a 2 quart sauce pan combine the first four ingredients. Bring to a boil over medium heat; boil 5 minutes, stirring continuously. Remove from heat; immediately add chocolate chips, marshmallows, nuts and vanilla. Stir until melted. Spread into buttered 9x9 pan. Cool; cut into squares.