Fudge Truffle Cheesecake

2 cups (12 oz. pkg) Semi-sweet choc. chips
3 pkgs. (8 oz. ea.) cream cheese, softened
1 14oz. can sweetened condensed milk
4 eggs
2 tsps. vanilla
1 prepared chocolate cookie crumb crust
Heat oven to 300. In heavy saucepan, over low heat, melt chips, stirring
constantly. In large bowl, beat cream cheese till fluffy. Beat in milk
until smooth. Add melted chips and remaining ingredients. Pour into
prepared crust. Bake 1 hour and 5 minutes, until center is set. Yummm!