In a large, nonstick skillet, brown ground beef over medium heat 8 minutes or until beef is no longer pink. Pour off drippings. Season with salt and pepper; set aside. Spoon sauce onto mufin halves and spread it with the back of the spoon. Top with ground beef, cheese, and toppings as desired. Place pizzas on a baking sheet. Broil 3 to 4 inches from the heat until cheese is melted.
Tip: Leave out the meat and add more veggies for even more nutrition! Involve the kids at home and let them spoon on the sauce or add on the cheese and toppings!