2 cups béchamel sauce (500 ml)1 pack of pre-cooked lasagna sheets1 kg (2.2 lbs) of desalted and shredded codfish1 medium eggplant, diced2 onions, chopped2 carrots, grated1 small red bell pepper, chopped1 small yellow bell pepper, chopped300 g (10.5 oz) broccoli, quartered300 g (10.5 oz) cauliflower, quartered3 garlic cloves, mincedOregano to tasteSalt to tasteGround white pepper to tasteOlive oil to tasteGrated cheese to taste