Creamiest Mushroom Ravioli with Zucchini and Heirloom Grape Tomatoes

Wash and dry all produce. Bring a large pot of salted water to a boil. Quarter zucchini lengthwise, then cut crosswise into ¼-inch-thick triangles. Halve and peel shallot, then thinly slice. Halve tomatoes lengthwise. Pick a few parsley leaves from stems for garnish, then finely chop the rest of the bunch.