In a large bowl blend ground meat, crackers, egg, milk, salt and pepper. Mix until well blended.

Moisten a piece of waxed paper 18 inches long. Pat meat mixture to make a rectangle 9 x 12 inches. Spread onions, green peppers, tomatoes evenly. Sprinkle over this mixture the crushed crackers.

Roll as for a jelly roll starting with a 9 inch side, making a complete roll. Place in a lightly greased 9 x 5 inch bread pan.