Preheat oven to 350 degrees.
In a large skillet, cook ground beef, onion, & garlic over medium heat until the beef is cooked. Drain off fat. Stir in undrained tomatoes & tomato paste. Bring up to a boil, then reduce heat. Simmer, uncovered, for 5 minutes.
Spoon mixture into the bottom of an ungreased 2 quart rectangular baking dish. In a bowl, stir together the sour cream, soup, & shredded cheddar cheese. Spread over meat mixture in baking dish. Evenly distribute the french fries over the very top. Sprinkle with seasoning salt & pepper.
Bake, uncovered, for 45 minutes or until heated through & fries are golden. Serve with toppers, if desired.