If you have one, put a pizza stone into the oven. Preheat the oven to 400 degrees.
Meanwhile, slice the mushrooms (I cheated and bought presliced -- they were on sale).
Crush and chop the garlic into fairly thick pieces.
I often remove the sprout portion of the garlic as it can be bitter and also can cause sensitivity in some people.
Lay four pitas out.
Spread 2 tablespoons of ricotta cheese over each pita.
Lay out the mushrooms and sprinkle on the garlic.
Sprinkle with 2 tablespoons of grated cheese.
Bake in preheated oven for 10-15 minutes. As the pizza bakes, the garlic "roasts" and turns sweet and delicious, the cheese melts and gets wonderfully gooey without being overwhelming and the mushrooms infuse the pizza with their delicate flavor. Yum! When the crust is golden brownand the cheese is melted, remove the pizza from the oven and let it rest for a minute or two.
Slice and enjoy with a green salad.