½ cup butter
6 ounces semisweet chocolate chips
12 ounces evaporated milk
3 cups powdered sugar
½ tsp. vanilla
Melt butter and chocolate chips in a pan on the stove. Alternate adding milk and powdered sugar while whisking until all is incorporated. Bring to a boil, reducing heat and stirring constantly. Boil for 5 minutes. Add vanilla. It will thicken as it cools.
I prefer to make this head of time and let it sit in the fridge, then reheat. I think it is a better consistency.
