This easy, healthy Grilled Pork Tenderloin with Marinated Cucumber-Fennel Salad is the perfect gluten free, dairy free grilled dinner for summer. Use half of the vinegar and mustard based marinade for the pork tenderloin and half as a vinaigrette for the vegetable salad, making this recipe quick to make. There are just a few ingredients, a lot of flavor and no added sugar, making this tasty recipe something you will feel great eating!