Chocolate Caramel Walnut Fudge

18 ounces semisweet chocolate chips -- ( 3 cups)
14 ounces sweetened condensed milk
1 dash salt
1 cup chopped walnuts
1/2 cup caramel topping -- ice cream topping
5 1/2 teaspoons vanilla extract

In saucepan, over low heat, melt chocolate pieces with sweetened condensed milk an salt.

Remove from heat; stir in walnuts, caramel topping and vanilla.

Spread evenly into foil lined 8 or 9-inch square pan. Chill 2 hours or until firm.

Turn fudge onto cutting board; peel off foil and cut into squares.