We made this the other night and everyone LOVED it.
1 store bought pizza crust. I used Presidents Choice flat bread, but the thin crust pizza crust or anything you like would be fine. We use pita's on occasion.
1 Tbsp butter
6oz mushrooms (whatever kind you like, we used crimini)
2 leeks, green tops removed
2 sprigs of thyme
Tomato pesto (I used PC Tomato Pesto)
1 plum tomato
Salt and pepper
You can attack this pizza a number of different ways: do it on the grill...do it in the oven (on a pizza stone, the back of a cookie sheet, a pizza pan, or right on the rack). I used my flat grill sheet for my BBQ. Its basically like a cookie sheet with lots of holes in it. I like my pizza crust a little crispy on the bottom, but not crunchy.
Crank the oven to 350, put in the stone.cookie sheet/pizza pan, whatever. Heat a skillet on the stove, adding a tbsp of both olive oil and butter when the pan is hot. Add sliced mushrooms (we like them sliced thinly) and sliced leeks to soften and brown. When they are almost done, strip the leaves off of the thyme sprigs and toss them in there as well.
Let me divert your attention to something you may or may not know...leeks can be dirty veggies, and just rinsing them under the tap isn't going to get all the sand out. Get a bowl of cold water and, as you chop the leeks, place them in the bowl to float. You might need to give them a swish to break up the rings because that's where the dirt and grit will be hiding. The leek slices will float on the top, and the grit will sink to the bottom. Scoop the ones off the top and throw them into the pan. Add a bit of salt, pepper, and the thyme leaves.
Ok, back to this pizza. While the mushrooms and leeks are browning, I pulled the hot pizza stone out of the oven, oiled the bottom of the prepared pizza crust, put it on the stone, and put it in the oven to warm.
Once the crust is warmed, pull it out of the oven and smear on some tomato pesto. Distribute the mushroom/leek mess over the pesto, add slices of roma tomato, cover with rounds of fresh mozzarella. Finish with a drizzle of olive oil (optional), salt and pepper, and slide back in the oven to melt the cheese.