Cook sausage in 12-inch skillet over medium-high heat, stirring occasionally, until no longer pink; drain. Stir in uncooked Pasta, Sauce Mix and remaining ingredients except cheese and additional chili powder. Heat to boiling, stirring frequently. Reduce heat; cover and simmer 14 to 16 minutes, stirring occasionally, until pasta is tender. Remove from heat and uncover (sauce will thicken as it stands). Sprinkle with cheese and additional chili powder.