1Place Tater Tots in an ungreased 13-in. x 9-in. baking dish. Bake, uncovered, at 400° for 10 minutes.
Meanwhile, in a large skillet, cook beef over medium heat until no longer pink; drain. Stir in the broccoli, soup, tomato, 3/4 cup french-fried onions, 1/2 cup cheese, milk, garlic powder and pepper; heat through. Pour over Tater Tots.
Cover and bake for 20 minutes. Uncover; sprinkle with remaining onions and cheese. Bake 5-10 minutes longer or until cheese is melted.