Roast the sunflower seeds in a pan, remove and set aside. Wash tomatoes and cut in half. Drain the mozzarella, halve the balls and cut into 24 thick slices. Wash the basil and pluck the leaves.
Place 1 mozzarella slice and 1 basil leaf between 2 tomato halves on wooden skewers and stack on a plate.
Mix together vinegar, pesto, salt and pepper and water, whip in the oil. Spread over the skewers and sprinkle with the roasted kernels. Garnish with the rest of the basil.