Source: Martha Stewart Living, November 2009
- 1/2 cup packed dark-brown sugar
- 1/4 cup heavy cream
- 1 1/2 ounces (3 tablespoons) unsalted butter
- 1 teaspoon pure vanilla extract
- 1/2 teaspoon salt
Bring all ingredients to a simmer in a medium saucepan over medium-high heat, and cook for 5 minutes. Let cool slightly.