Start by pre-heating the oven at 350°F (180°C).
In a deep pan on medium-high heat, add 1 tablespoon of oil. Add salt and black pepper to the pork and once it is hot, add them to the pan. Cook for 2 minutes.
Turn and cook for another 2 minutes. Remove it and reserve.
In the same pan, add another tablespoon of oil. Add the onion. Stir fry it for about 2 minutes. Add the garlic and cook it for another minute.
Add the mushrooms and reduce the heat to medium. Cook it for about 8-10 minutes.
Add the flour. Mix it well.
Add the vegetable bouillon and the boiling water and the cooking cream. Mix it well and cook it for about 5 minutes, until the sauce is a bit more creamy. Adjust the salt and pepper as per taste. Add the parsley at the end and mix it well.
In a baking tray (that is deep), add the pork medallions first.
Then add the mushroom sauce to cover it.
On top, add the shredded cheese. Place it in the pre-heated oven for 25 minutes, uncovered.
Remove it from the oven.
Serve it on top of rice or noodles (preferably spätzle) and a side of salad.