Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Coat the sheet with oil. Clean the mushrooms (cut the stems briefly), if necessary brush them carefully.
For the cream cheese and herb butter, peel the shallots and garlic and dice them roughly. Wash the rosemary, dab dry and chop the needles coarsely. Finely puree shallots, garlic, rosemary, butter, cream cheese and capers with a hand blender.
Season to taste with salt and pepper.
Fill the mushrooms with the butter, place them on the baking tray and bake in a hot oven for 15-20 minutes.
Wash the basil and parsley, shake dry and roughly pluck. Serve mushrooms sprinkled with the herbs. Possibly serve with lemon wedges. Baguette tastes good with it.