Trim fat from beef. Thinly slice beef across the grain into bite-size strips; set aside.
In a wok or large skillet heat 2 tablespoons of the salad dressing over medium-high heat. Add broccoli. Cook and stir for 3 minutes. Add beef to wok or skillet. Cook and stir 2 to 3 minutes or until beef is slightly pink in center. Remove beef and broccoli from wok or skillet. Remove stem end and seeds from sweet pepper. Cut sweet pepper in bite-size strips.
In large bowl combine greens, sweet pepper, beef, and broccoli. Drizzle remaining salad dressing; toss to coat. Makes 4 servings.