Grilled Teriyaki Steak & Vegetables

WHAT YOU'LL NEED

• 1 tub Knorr® Homestyle Stock - Beef
• 1 cup finely chopped onion
• 2 Tbsp. firmly packed brown sugar
• 2 Tbsp. vegetable oil
• 2 tsp. reduced sodium soy sauce
• 1 large clove garlic
• 1 lb. flank steak
• 4 cups assorted cut-up fresh vegetables (bell peppers, mushrooms, zucchini and/or yellow squash)