Step 1

Preheat the oven to 350 degrees Fahrenheit.

Step 2

Combine the beef, cracker crumbs, egg, ketchup, mustard, salt, pepper, and onion in a large bowl. Blend in a stand mixer just until combined.

Step 3

Form the mixture into two loaves and place them in a 9x3x2-inch baking pan, crosswise.

Step 4

Bake the loaves for an hour or until brown.

Step 5

Transfer the loaves into serving plates right away. Let them cool slightly to firm up.

Step 6

Slice, serve, and enjoy!

Step 7

*If making a sandwich, cut 2 slices of meatloaf. Place them on top of a slice of white bread, and top with lettuce and tomato. Cover with another piece of white bread.