Active Time

　　15 min

　　Total Time

　　1 3/4 hr

Ingredients

　　1/2 cup packed dark brown sugar

　　2 tablespoons plus 2 teaspoon cornstarch

　　1 1/2 cups whole milk

　　1/2 cup heavy cream

　　2 tablespoons unsalted butter, cut into bits

　　1 teaspoon pure vanilla extract

　　Accompaniment: lightly sweetened whipped cream

　　Whisk together brown sugar, cornstarch, and 1/4 teaspoon salt in a heavy medium saucepan, then whisk in milk and cream. Bring to a boil over medium heat, whisking frequently, then boil, whisking, 1 minute. Remove from heat and whisk in butter and vanilla. Pour into a bowl, then cover surface with buttered wax paper and chill until cold, at least 1 1/2 hours.