Line bottom and sides of an 8x8 inch pan with plastic wrap. Set aside.
In a medium saucepan, bring cranberries and corn syrup to a boil. Boil on high for 5 to 7 minutes, stirring occasionally, until the liquid is reduced to about 3 tablespoons.
Remove from heat.
Immediately add chocolate chips, stirring untill they are melted completely.
Add confectioner's sugar, evaporated milk, and vanilla extract, stirring vigorously until mixture is thick and glossy.
