HEAT dressing in large nonstick skillet on medium-high heat. Add peppers; cook and stir 2 min. Add meat and chili powder; cook 10 min. or until meat is done, stirring frequently.
STIR in tomatoes, beans and salsa. Bring to boil; cover. Simmer on medium heat 15 min., stirring occasionally.
SERVE topped with cheese and sour cream.
serving size = 1-1/2 cups (375 mL)