Clean and stem mushrooms.
Combine olive oil, lemon juice, thyme, dill and bay leaf.
Add mushrooms and cook until marinated.
Allow mixture to sit and further marinate. You can even cool overnight to marinate.
Saute shallot and garlic in butter until tender.
Add remaining ingredients, except cheese and continue to saute.
FIll mushrooms with crab mixture and sprinkle with grated cheese.
Broil until brown.