Soak rolls in water. Peel and finely chop 1 onion. Put the chopped and onion in a bowl. Squeeze out the bread roll well and add it. Mix everything together and season with salt and pepper.
Heat the oil in a pan. Shape the minced meat into about 2 flat meatballs and fry on both sides over medium heat for 6-8 minutes. In the meantime, cut the baguette open lengthwise and spread the inner surfaces with tomato and chilli sauce.
Peel the remaining onion and cut into rings. Cover the bottom half of the baguette with it. Put the meatballs on top. Clean, wash, dry and slice the tomatoes. Spread on the meatballs.
Cut the sheep's cheese into slices and place them on the tomatoes. Bake in the preheated oven (electric: 200 °C/ gas: level 3) for 10-12 minutes. In the last 2 minutes, place the second baguette half on top and bake with it.
Serve garnished as desired with lettuce, tomato quarters and parsley.