Soak gelatine in cold water. Clean, wash and cut the peppers into small cubes. Peel and finely dice the onion. Peel garlic and press it through a garlic press or chop it very finely.
Mix the onions, garlic and olive oil with the quark. Season with salt and pepper. Squeeze out the gelatine, dissolve over a mild heat and stir into the quark. Fold in diced peppers and put the mixture in a cool place for a short time.
Meanwhile wash 3-4 savoy cabbage leaves, cut the leaf veins flat and blanch in plenty of boiling salted water for 3-5 minutes. Quench, place on a kitchen towel and dab dry. Lay the leaves overlapping to form a rectangle and brush with the quark mixture.
Wrap the pages and roll up the leaves with the kitchen towel. Wrap them in aluminium foil and let them cool for at least 2 hours. Meanwhile roast the sunflower seeds in a dry pan.
Wash and halve the cherry tomatoes. Wash the alfalfa sprouts and drain well on a sieve. Mix balsamic vinegar with salt and pepper. Beat in walnut oil. Cut the savoy cabbage roulade into slices and arrange on plates with the tomatoes and sprouts.
Spread vinaigrette over the sprouts and tomatoes. Sprinkle with sunflower seeds and serve garnished with parsley. Serve with fresh baguette.