Hello, Danielle!
Oh, my, this is a very difficult question because there are so many fabulous restaurants from which to chose in Walt Disney World!
To be honest, I don't have one favorite, but I do have several favorite restaurants, in a variety of price points, locations, as well delivery-style (both Quick-Service and Table Service restaurants.) Among my favorites, though, are Le Cellier Steakhouse (Epcot), Mama Melrose's Ristorante Italiano (Disney's Hollywood Studios), Tony's Town Square Restaurant (Magic Kingdom Park) and Wolfgang Puck Cafe (Downtown Disney). All of these are Table-Service locations. For Quick-Service, I prefer Cosmic Ray's Starlight Cafe (MK), Fairfax Fare (HS), Flame Tree Barbeque (AK) and Sunshine Seasons (Epcot). Each of these restaurants offer great variety as well as excellent value for your dining dollar.
A full listing of restaurants can be found in
Walt Disney World's Disney Dining Plan. Depending on your budget, your time and your food preferences, I suggest looking over the menus of a variety of restaurants at Walt Disney World in order to find some favorites of your own.
Unofficial menus, including approximate prices, are available at allearsnet.com. Again, this is not a Disney website, so the information printed there is in no way guaranteed. However, the postings there will give you an idea of what your options are when dining around the World! :-)
Please send me any additional questions you may have as you consider your options in Walt Disney World! I love to help!