Cook sweet potatoes until tender; cool and peel. Meanwhile, cut oranges in half and, with a sharp knife, carefully cut fruit from inside shell. Arrange orange shells in a shallow baking dish. Trim white membranes from oranges.
Place sweet potatoes in a large mixing bowl and add butter, cream, orange juice, brown sugar and bourbon; beat until smooth. Spoon into orange shells. Bake in a 350°F oven for 25 to 30 minutes or until heated through. Garnish with orange sections or slices.
Makes 8 servings.