Some of my friends and athletes use the book Feed Zone Portables for recipes of on-the-go real food snacks/fuel for long runs and races. They have had a lot of success switching to these recipes instead of using processed snacks or gels for fueling. There are also gluten-free and vegetarian recipes in the book, which fits their health and lifestyle needs. The recipes are pretty quick to prepare and don’t require an extensive number of ingredients. Now some of them also make spin off recipes from what they learned in the book about getting energy from real food.