Wash the asparagus, peel the lower third and cut into 3 cm long sections. Put the butter in a pan, let it melt and fry the asparagus in it for 10 minutes, sprinkle with crushed pepper and lightly salt. Wash the spinach leaves, cut into bite-sized pieces and serve on 2 plates. Spread the asparagus and the halved cocktail tomatoes on top.
Mix the dressing ingredients well in a twist-off glass and pour over the salad.
The salad tastes best when the asparagus is still lukewarm and bread is served with it. But also tastes delicious with red meat.