Ingredients

1 stick (8 tablespoons) unsalted butter 

1 vanilla bean, halved lengthwise 

2 cups heavy cream 

2 cups packed dark-brown sugar 

1/2 teaspoon coarse salt 

Preparation

Melt butter in a medium saucepan over medium heat. Scrape in vanilla seeds, and add bean. Whisk in cream, sugar, and salt. Bring to a boil. Reduce heat to medium-low; simmer, stirring occasionally, until mixture is slightly thickened, about 5 minutes. Discard vanilla bean.