Tartlets

I'm considering making little individual mushroom tartlets for the next moon ceremony (Tuesday). I'm thinking of sauteing the mushrooms lightly in olive oil with garlic and....probably thyme. But unsure what to bind them with in the tart.

Okay....considering a cream cheese base, mushrooms piled on top. Possibly mixed with some mild cheese, baked to melt. Maybe an egg mixture like a quiche.

Any (easy, cheap) ideas, suggestions, etc?