A giant catering tin of mushrooms was a bargain buy but once opened presented a ‘waste not want not’ challenge. I have paired them so far in:

chestnut stuffing – with breadcrumbs and herbs

Pasta sauce, boosting the usual tomato and onion base and topped with truffle oil

Savoury pancakes with cream and garlic

Chicken and mushroom pie – pastry bottom and lid, broth based gravy

Potato mushroom curry

And the rest is now in the freezer awaiting inspiration. Ideas welcome!