2 cups heavy whipping cream....not half and half
1/2 teaspoon vanilla
1 cup brown sugar
2 cups (16 oz.) good quality semi-sweet chocolate chips. You can go half semi-sweet and half 60% dark chips. DO NOT USE MILK CHOCOLATE CHIPS
Bring cream and vanilla to a boil in 4 cup glass measuring cup. WATCH CAREFULLY!! Remove after it boils for a few seconds.....
Carefully add brown sugar to cream, it usually boils up when you add the sugar.
Stir in chocolate chips.
I use a wire whisk to blend together.
Store in covered container the refrigerator.
Heat only amount needed. Do not boil again, the chocolate will BURN.