What to do with extra mushrooms?

I underestimated the yield of my homegrown mushrooms. I thought I would have a steady supply over the next few weeks, but instead, they all matured at once. As a result, I now have 2-3 kg of mushrooms, with another batch expected in about a week. I plan to make a pasta-mushroom casserole, pizza, capsicum-mushroom lecso, and mushroom cream soup, but I still have a lot left. Do you have any suggestions for how I can use them?