Drain the olives. Clean, wash and cut the peppers into rhombs. Dice bread. Heat 2 tablespoons of oil in a large, coated pan. Roast the bread in it in portions until golden brown and let it drain on kitchen paper.
In the meantime, clean and wash the salad and drain thoroughly. Halve leaves and cut into finger-thick strips. Wash tomatoes, dab dry and cut in half. Cut mozzarella into cubes. Peel and finely dice onion.
Peel and finely chop the garlic. Wash the basil, dab dry, pluck off 4 tips and put aside for garnishing. Remove the remaining leaves and cut into fine strips. Put prepared ingredients in a bowl.
Season vinegar with salt, pepper and a little sugar, fold in 4 tablespoons of oil. Fold the vinaigrette into the salad, fill into bowls and garnish with basil.