1 pound boned sirloin steak, cut into 1/4-inch strips
1 garlic clove, minced
3 cups sliced bok choy
1/4 cup thinly sliced green onions
1 cup diced tomato
1/3 cup beef stock
3 T. low-sodium soy sauce
1 T. oyster sauce
1/8 tsp. pepper

Combine beef and garlic in a bowl; chill 10 minutes. Place a large nonstick skillet over medium-high heat until hot. Add beef mixture, sauté 5 minutes or until beef is done. Remove beef from pan; keep warm. Combine bok choy and green onions in skillet; sauté for 2 minutes. Add remaining ingredients; simmer 3 minutes or until slightly thick.