BROWN meat in large skillet on medium heat; drain. Add onions and peppers; cook and stir 5 min. or until tender.
ADD beans, tomatoes, tomato sauce and chili powder; mix well. Reduce heat to low; cover. Simmer 30 min., stirring occasionally.
SPRINKLE 3 Tbsp. cheese onto the bottom of each of six soup bowls; top with chili and remaining cheese.