With a frying pan to let brown the seeds of pumpkin. Attention that the seeds can jump, therefore to use a wood spoon. To use for example a blender to grind them. To take a bowl and to mix the green pepper, that black and the dry peperoncino after having crushed them. To mix together the mustard and the seeds of pumpkin. To add the tomatoes and to mix for about 3 minutes. To cover the fillet with the batter and to leave it to marinate in a bowl for about 2 hours. To heat the oven to 240° C. Insert the fillet abandoned on an oven baking-pan and covered completely of batter. After 10 minutes to reduce up to 180° C. and to continue the cooking for others 35 minutes. Before serving it, the roast must be let rest for 10 minutes covered by an aluminum sheet and subsequently cut to slices of about 1-1,5 centimeters.