Prepare Pecan Clusters.
In a mixing bowl, combine half-and-half, caramel topping, sugar, and vanilla. Stir until sugar is dissolved.
Stir in whipping cream and about half of the Pecan Clusters. Freeze in a 4- or 5-quart ice cream freezer according to the manufacturer's directions. Sprinkle remaining clusters over individual servings. Makes 2 quarts.