German Chocolate Filling

3 egg yolks
1 cup sugar
1 cup evaporated milk
1/4 lb. margarine
1 cup coconut & 1 cup pecans
1 teaspoon vanilla

Put in saucepan combine evaporated milk, sugar , yolks ,and margarine. Heat over medium heat about 12 minutes. Remove from heat and add coconut. let sit until cool then spread on cake.