Wash, quarter and seed the tomatoes. Finely dice the flesh. Wash parsley and put 1-2 stems aside. Chop the rest, mix with tomatoes and 1 tablespoon of oil. Season to taste. Grate cheese.
Fry the ciabatta in 2 tablespoons of hot oil from each side until golden brown. Take out the ciabatta.
Wash the mussels, dab dry. Fry them in hot clarified butter for 1-2 minutes on each side until golden brown, also frying the edge briefly. Season with salt and pepper.
Spread the tomato mixture on the slices of bread. Place 2 scallops on each slice. Sprinkle with cheese as desired and bake briefly under the preheated grill. Arrange the breads and garnish with the rest of the parsley.