Preheat oven to 400° F.
Place potatoes in a large plastic bag, add cornstarch and salt, seal top of bag and shake vigorously. Spread coated potatoes on a nonstick cookie sheet and bake for 15 minutes.
Form ground beef into 2-inch balls. Place a sheet of waxed paper on working surface and arrange meat balls. Lay another sheet of waxed paper over the meatballs and press to flatten.
Place mini-burgers in a preheated skillet and sprinkle with onion salt and pepper. Cook for 2 to 3 minutes, and turn.
Bake biscuits according to package directions. Remove from oven, let cool down before cutting them in half. Place a hamburger in each biscuit, serve with French fries and condiments.Servings: 4