You could try to pickle them? The recipe I found uses 2tbsp sugar , 2tbsp salt, 1tbsp vinegar , black pepper and bay leaves for 1l water and 1kg of mushrooms. You cook the mushrooms for half an hour, then boil the brine as well, mix the mushrooms with the syrup, cook together for 15’ and put them to jars. I haven’t tried it yet, though.
Like, not dying while trying to go through menus while driving