If you want the most fantastic vegetarian ravioli, try the pumpkin ravioli at WGP Cafe, in DTD. It is served in brown butter sauce, with fried sage, port wine glaze, toasted pine nuts and aged parmesan. When served with a decent glass of wine, I am in heaven when I order this! For dessert try the chocolate fondue and share it with a loved one It is served with homemade marshmallows, brownies, cinnamon cake and fresh strawberries.
I also have had great butternut squash ravioli at the CG. Their menu changes quite frequently, and according to allearsnet.com, it's not currently on their menu. They are serving tortelloni with buffalo mozzarella, ramps, chanterelles, sweet peas, and truffle oil, and that sounds like a pretty good substitute for a vegetarian ravioli!