Ingredients
- 1⁄2 cup grated yellow onion
- 1 cup grated peeled sweet potato
- 1 lb ground turkey
- 1⁄2 cup finely chopped fresh parsley
- 1⁄3 cup spinach, finely chopped
- 1⁄2 cup gluten-free whole-grain mustard
- 1⁄2 tsp sea salt
- Pinch of black pepper
These burgers are moist and juicy and have a savory flavor that comes from a secret ingredient: A hefty amount of mustard. Half a cup may seem like a lot of mustard, but it’s what makes these burgers outstanding. Using grated sweet potato instead of traditional flour or breadcrumbs adds extra fiber and nutrients.