Wash the asparagus and cut diagonally into slices.
Melt the butter in a pan and add the asparagus. Season the asparagus with salt and pepper and fry for 5-10 minutes with the lid closed.
In the meantime, peel the tomatoes and cut them into small cubes. Let the asparagus cool down a little and mix with the diced tomatoes. Season everything again with salt, pepper and a pinch of sugar and a splash of lemon juice. Fold in the parmesan and put a little bonnet on top when serving.
The salad goes ideally with meat and fish dishes, wonderfully with grilled food and also tastes delicious cold.