The only recipes or clones from this chain that I have been able to locate are linked below. However, Souplantation has a blog where they post one recipe per month at:
Souplantation Blog

chicken noodle soup
Orzo And Artichoke Salad
Pear and Pecan Salad w/Crumbled Cheese
Tomato and Basil Salad Dressing
Tomato and Onion Soup
Cream of Broccoli Soup
Chicken Salad Dressing
Oriental Chicken Salad
New England Clam Chowder
Souplantation Summer Lemon with Spiced Pecans Tossed Salad
Sweet Tomatoes Doris' Broccoli Slaw

No luck:

Brown rice & pinto bean soup Cream of mushroom soup
Creamy Pumpkin Bisque
Irish Potato Leek Soup
Vegetarian vegetable soup