Thai Beef and Noodles

Cook noodles as pkg directs. Remove from heat; cover. Meanwhile heat 2 tsp oil in large nonstick skillet. Season beef with 1 ⁄4 tsp each salt and pepper. Add half to skillet and, turning once, cook 2 minutes until browned. Remove to a bowl with a slotted spoon. Cook remaining beef; add to bowl. Add 1 ⁄2 cup water and vegetables to skillet. Cover and cook 4 minutes until crisp-tender. Remove from heat. Add beef and noodles; toss to mix. Garnish with sliced scallions and chopped peanuts, if desired.