I have several great flower cookbooks. They all have a wide variety of both sweet and savory recipes; including drinks, main courses, appetizers, and desserts. You could make a flower feast!
The Forgotten Art of Flower Cookery by Leona Woodring Smith
Edible Flowers: From Garden to Palate by Cathy Wilkinson Barash
Edible Flowers: A Kitchen Companion by Kitty Morse
The Lavender Cookbook by Sharon Shipley (a friend of my mom's)