To prepare this pasta casserole, you need to cook mushroom soup.
Pour dry mushrooms with boiling water for 5 minutes. Coarsely chop the onion, celery and mushrooms. Melt the butter in a heavy bottomed saucepan, add the olive oil, chili and flour. Add onion and celery. Cook for a couple of minutes.
Add champignons, simmer for 20 minutes. Pour hot broth (1.5 l).
Add dried mushrooms. Bring to a boil and cook for 15 minutes.
Add cream and grated cheese. Beat with a blender.
Boil pasta. Pour half of the soup into the saucepan with pasta, mix and pour into a baking dish. Sprinkle with grated cheese. Finely chop the remaining mushrooms and garlic, add thyme leaves, mix. Bake 30 min. (170 degrees).
Enjoy your meal!