Pour the cream into a heavy saucepan and cook over medium heat until it is just boiling
Add the sugar and cook, stirring frequently, until the sugar is dissolved - about 3 minutes
Get the chocolate chips ready - I highly recommend the Ghiradelli 60% cocoa chocolate chips for this recipe - they do not contain gluten (according to the ingredient list & websites I've searched) and have a rich chocolate flavor. If you can't find them, substitute 2 cups of your favorite semi-sweet chocolate chips
Reduce the heat to low and add the chocolate chips to the pan
Continue to cook the mixture, stirring constantly, until the chocolate has melted
Grab your coffee source - this espresso powder is readily available in most grocery stores. If you can't find it, substitute 2 tsp of regular instant coffee or a 1/4 cup brewed coffee. You can also make the sauce without the coffee and it will still be delicious
Add the salt and espresso powder, instant coffee or 1/4 cup brewed coffee to the pan and stir to combine
Cook the mixture over low heat, stirring occasionally, until it is smooth and has thickened slightly - 10-15 minutes.
Remove the pan from the heat, add the butter and vanilla
Stir the sauce to incorporate the butter and vanilla - it will look smooth and silky.
Serve over your favorite ice cream - my favorites are vanilla, coffee or peppermint - top with toasted pecans for additional flavor
Store the sauce in the refrigerator and reheat as needed. It makes a fantastic gift too!