Tortellini with flour

1 lb cheese tortellini 2 cups half-and-half 2 tablespoons flour 2 tablespoons butter 1 egg yolk 1 cup grated parmesan cheese 1 dash freshly-grated nutmeg 4[...]

10 ounces dried cheese-filled tortellini (2-1/2 cups) or 10 ounces two 9-ounce packages refrigerated tortellini 1 medium carrot , thinly sliced 1 1/2 cups[...]