After looking at many recipes I didn't have the ingredients for, I made changes and came up with this. A little thinner than traditional hot fudge sauce, it is yummy just the same.
1 can coconut milk, chilled (you want the cream)
2 blocks of semi-sweet chocolate (1oz each)
2 T butter
1 t vanilla
Sweetener if desired, to taste
Place chocolate & butter in a small saucepan & turn to medium low. Open your can of chilled coconut milk & scrape just the hardened cream into your pan. Once you break through to the almost clear liquid at the bottom, you can pour the water into a glass (and enjoy it while you make the sauce). Scrape the remaining cream into your pan. Stir often until your ingredients are melted. Whisk ingredients until smooth. Remove from heat & whisk in vanilla.