Combine sauce ingredients in a bowl. Set aside.
In a large skillet, cook ground beef until no longer pink. Drain fat. Add onion, water, soy sauce, parsley, basil, and garlic powder. Simmer for 10 minutes, until liquid is evaporated.
Split the hoagie rolls. Slather them with sauce, and put cheese on top. Place them under the broiler until cheese melts, 1-2 minutes. Divide ground beef between the buns and serve.
