Quarter flat bread, cut open and spread with herb butter. Peel onions and cut them into thin rings. Clean and wash yellow peppers, also cut into rings. Wash parsley, pluck off leaves.
Cut olives into slices. Fill flat bread with prepared ingredients. Spread the bread roll with tartar sauce. Clean, wash and cut iceberg lettuce into strips. Clean, wash and cut green peppers and radishes into rings.
Cover the rolls with it. Spread the toast with mustard. Wash the cucumber and slice thinly. Clean, wash and cut radicchio into strips. Cover 4 slices of toast with the radicchio. Place the remaining slices of toast on top.
Sprinkle with dried herbs. Grill all breads for about 5-10 minutes.