Wash the parsley, shake dry and pluck the leaves from the stalk. Finely chop the leaves. Mix cottage cheese, parsley and lemon juice, season with salt and pepper. Peel and finely grate the carrot.
Clean the salad, wash and pat dry. Toast bread for 2-3 minutes. Let cool briefly. Open on one side and fill with lettuce, tomato, cucumber, cottage cheese and carrot. Sprinkle with some ground pepper.