Chop the walnuts and roast them in a pan without fat until brown. Put the tomatoes in a sieve and collect the oil. Clean and wash spring onions, dab dry and cut into fine rings. Pluck basil leaves from the stalks and cut into fine strips except for a little bit for garnishing. Chop tomatoes finely
Mix walnuts, except for a little bit for sprinkling, spring onions, basil, tomatoes, 3 tablespoons of tomato oil and low-fat curd, season with salt, pepper and sugar. Spread the slices with it
Arrange on plates. Sprinkle with walnuts and garnish with basil