Preheat the oven to 350 F.
Crush the Ritz crackers until crummy.
In a large mixing bowl, combine the ground beef, eggs, milk, crushed crackers, minced onion, cheddar cheese, ketchup, and mix well. Press the meatloaf into the loaf pan or tray.
Bake in the preheated oven for 45 to 50 minutes, or until beef is cooked in the middle. Brush with ketchup on top, and bake another 10 to 15 minutes.
Prepare the salad.
Prepare the mashed potatoes.
Serve Ritzy Meatloaf with side salad and mashed potatoes.