Step 1

In a wide saucepan or skillet, melt the butter with the brown sugar and the 1/4 cup of heavy cream, stirring until smooth.

Step 2

Without stirring, let the mixture cook at a bubbling simmer for three minutes.

Step 3

Remove from heat and stir in the remaining 6 tablespoons of cream. Let cool a bit, then stir in the vanilla extract.