1 cube butter
1 square unsweetened baking chocolate
1 can sweetened-condensed milk
1 tsp vanilla
dash of salt
Melt the butter and the square of chocolate over low heat. When melted, stir in the sweetened condensed milk and stir until mixed together. Continue to stir and cook until fudge sauce is hot, but not to a boil. Remove from heat and add vanilla and salt. Serve over just about anything!