Wash the lemon, rub the peel, squeeze the juice from 1/2 lemon. Mix the cottage cheese with the grated lemon zest and lemon juice in a bowl.
Cut the tomatoes into cubes and mix in a second bowl with the olive oil and balsamic vinegar. Season to taste with salt and pepper. Cut the basil leaves into small pieces and stir in.
Arrange the tomatoes on the cottage cheese and garnish everything with a little basil.