Cut beef steaks lengthwise in half, then crosswise into 1-inch wide strips.
Cook and stir garlic in oil in large nonstick skillet over medium-high heat 1 minute. Add beef (1/2 at a time) and stir-fry 1 to 1 1/2 minutes or until outside surface is no longer pink. Season with salt and pepper. Remove with slotted spoon, keep warm.
Add zucchini to same skillet, stir-fry 2 to 3 minutes or until crisp-tender. Return beef to skillet with tomato halves and dressing, heat through. Serve beef mixture over hot pasta, sprinkle with cheese.