Step 1

Heat 1-1/2 tsp. oil in large nonstick skillet on medium-high heat. Sprinkle meat with pepper. Add half the meat to skillet; cook and stir 1 to 2 min. or until evenly browned. Transfer to bowl. Repeat with remaining oil and meat.

Step 2

Cook noodles as directed on package, omitting salt. Meanwhile, heat Italian dressing in same skillet on medium heat. Add next 4 ingredients; cook 12 min. or until vegetables are crisp-tender, stirring occasionally. Stir in broth and peas; simmer 2 min. or just until peas are tender. Add meat; cook 1 to 2 min. or until heated through, stirring occasionally. Stir in sour cream until well blended.

Step 3

Drain noodles. Serve topped with meat mixture and tomatoes.