Slice the squash in half lengthwise and scoop out the seeds. Place squash, cut side down, in a baking dish. Add 1/2-in. water and cover tightly with foil. Bake at 375° for 20-30 minutes or until easily pierced with a fork.
Meanwhile, melt butter in a large skillet. Add the mushrooms, onion, garlic, basil, oregano, thyme, salt and pepper; saute until onion is tender. Add tomatoes; cook until most of the liquid has evaporated. Set aside.
Scoop out the squash, separating strands with a fork. Combine the squash, tomato mixture, bread crumbs, ricotta cheese and parsley.
Transfer to a greased 2-qt. baking dish. Sprinkle with Parmesan cheese. Bake, uncovered, at 375° for 40 minutes or until heated through and top is golden brown. Yield: 6 servings.