Preheat your oven to 350°F (175°C) and lightly grease a 9x5-inch loaf pan.
Combine the ground beef, crushed Ritz crackers, shredded cheddar cheese, chopped onions, bell peppers, milk, eggs, salt, and black pepper in a large mixing bowl. Mix well until all the ingredients are thoroughly combined.
Transfer the meatloaf mixture into the prepared loaf pan and shape it into a loaf shape, ensuring it fills the pan evenly.
Whisk together the ketchup, brown sugar, and yellow mustard in a small bowl to make the topping glaze. Spread the glaze evenly over the top of the meatloaf.
Place the loaf pan in the preheated oven and bake for approximately 1 hour, or until the internal temperature reaches 160°F (71°C) when tested with a meat thermometer.
Once cooked, remove the meatloaf from the oven and let it rest for a few minutes before slicing. This allows the juices to redistribute and ensures a tender result.
Serve slices of the Cracker Barrel meatloaf with your favorite sides, and enjoy!
Note: Cooking times may vary, so checking the internal temperature for doneness is always best.