This is a nice recipe from Hugh Fearnley-Whittingstall’s River Cottage Every Day for a simple puff pastry mixed mushroom tart. Ideally (according to Hugh anyway) the mushrooms should have been freshly hand-plucked from the countryside immediately prior to making the tart. I found an ordinary tub of button mushrooms did pretty well. I imagine a mixture of wild mushrooms would look very effective.
Divided into three, the tart formed part of a simple, light supper. You could also serve it as a starter, or increase the quantities for a more substantial main course. It’s simple and quick to make, especially if you already have the puff pastry, either homemade or out of a packet. Apologies for the poor quality of photos, I’ll have to do another one some time to take some better ones!