Peel the lower ends of the asparagus, then place the stalks in a baking dish. Season with salt and pepper.
Finely chop the onion and wild garlic, spread over the asparagus. Crumble the feta cheese over it. Drizzle over the olive oil and pour in the vegetable stock.
Cook for 30 minutes at 200 ° C (top / bottom heat). If you want, you can thicken the sauce with flour and cream.