Drain the corn. Peel the onions and garlic and dice them very finely. Wash and clean the peppers, cut into 0.5 cm cubes. Wash the parsley, shake dry and roughly chop.
Heat the margarine in a large pan. Fry the onions, garlic and peppers for about 5 minutes. Take the pan off the stove, season with salt and pepper and let the vegetables cool down.
Mix the minced meat, breadcrumbs, eggs and mustard, season with salt and pepper. Mix in the vegetables and parsley and pour into a greased loaf pan. Bake in the preheated oven at 200 ° C, with convection 175 ° C for about 45 minutes.