Caramel Sauce

1 packed cup brown sugar

1/2 cup half-and-half
4 tablespoons butter
Pinch salt
1 tablespoon vanilla extract

Mix the brown sugar, half-and-half, butter and salt in a saucepan over medium-low heat. Cook while whisking gently for 5 to 7 minutes, until it gets thicker. Add the vanilla and cook another minute to thicken further. Turn off the heat, cool slightly and pour the sauce into a jar. Refrigerate until cold.