I have dined at both, and although I did like Café Orleans, I prefer the Blue Bayou for it's atmosphere and menu as well.
Here is the menu for the Blue Bayou:
Lunch Menu
Appetizers
Isla Cruces Crab Cakes - $11.99
Gulf-Stream Jumbo Shrimp Remoulade - $9.99
Entrées
Buccaneer's Beef Short Ribs - $26.99
Royal Street Seafood Jambalaya - $25.99
Five-Pepper Roasted Prime Rib of Beef - $29.99
Cajun-Spiced Salmon - $26.99
Tesora Island Chicken - $24.99
Port-Royal Mahi Mahi - $27.99
Portobello Mushroom and Couscous Maque Choux - $24.99
Molasses-Brined Bayou Pork Chop - $25.99
Le Special de Monte Cristo - $18.99
Dessert - Each treasured treat comes with a "Pirates" booty keepsake!
Tortuga Trio of Creme Brulee - $7.99
The Key West, Key Lime - $7.99
Flying Dutchman Cookie Boat - $8.99
To commemorate your visit to the Blue Bayou, take home the Blue Bayou chocolate mint doubloons! - $4.99
Split Plate Charge - $4.99
Dinner Menu
Appetizers
Isla Cruces Crab Cakes - $11.99
Gulf-Stream Jumbo Shrimp Remoulade - $9.99
Entrees
Buccaneer's Beef Short Ribs - $26.99
Royal Street Seafood Jambalaya - $25.99
Alaskan King Crab Legs - $34.99
Five-Pepper Roasted Prime Rib of Beef - $29.99
Filet Mignon - $33.99
Port-Royal Mahi Mahi - $27.99
Tesora Island Chicken - $24.99
Portobello Mushroom and Couscous Maque Choux - $24.99
Molasses-Brined Bayou Pork Chop - $25.99
Cajun-Spiced Salmon - $26.99
Dessert - Each treasured treat comes with a "Pirates" booty keepsake!
Tortuga Trio of Creme Brulee - $7.99
The Key West, Key Lime - $7.99
Flying Dutchman Cookie Boat - $8.99
To commemorate your visit to the Blue Bayou, take home the Blue Bayou chocolate mint doubloons! - $4.99
Split Plate Charge - $4.99
Blue Bayou Child's Menu
Kid-Cut Prime Rib - $10.99
Mickey's Cheesey Macaroni - $6.99
PB&J Monte Cristo - $6.99
Citrus Chicken Drummettes - $6.99
* kid's meal includes one child beverage
** Menu and Prices are Subject to Change Without Notice **
Now what is interesting is that I was under the belief that the split plate charge was $4.00 for lunch and $4.99 for dinner, however that information is from a menu dated Oct.07, to where this menu is dated, March 08, so the split plate charge probably is the same for lunch as it is dinner.
Here is the menu for Cafe Orleans:
Breakfast
Café Scrambled Eggs - $7.99
Creole Eggs Benedict - $9.99
Three-Cheese "Monte Cristo" French Toast - $10.29
Mardi Gras Vegetable Scramble - $7.99
"Mickey" Waffles - $7.99
Seasonal Fruit with yogurt and granola - $8.29
"Mickey" shaped Beignets - $6.99
Lunch and Dinner
French-Quarter Thirst Quencher
Pirate's Punch served in a souvenir "pirate" cup - $5.99
Starter
French Onion Soup - $3.99
New Orleans Gumbo - $3.99
Pommes Frites - $4.99
La Salade de Maison - $3.99
Entrees
Mardi Gras Crab-Salad Sandwich - $15.99
"The Big Easy" Shrimp Salad - $15.99
French Quarter Blackened Chicken Caesar - $13.99
Monte Cristo Sandwich - $15.99
Three-Cheese Monte Cristo - $15.99
Freshly Prepared Stuffed Crepes
Chicken Gumbo Crepe - $15.99
Seafood Herb Crepe - $15.99
Desserts
"Mickey"-shaped Beignets - $6.99
Chocolate Crepe Souffles - $6.99
Blue Bayou's Kid's Menu (Ages 11 and Younger)
Remy's Cheesey Macaroni - $6.99
Gusteau's Citrus Chicken Drummettes - $6.99
PB&J Monte Cristo - $6.99
* kid's meal includes fresh-cut fruit and one child beverage
Split Plate Charge - $4.00
Here is the link for the above information and as well as other Disney dining information.
http://www.themouseforless.com/tripplanning/menus/dl/menus.shtml