For the patties:
1 (15-ounce) can garbanzo beans, drained and rinsed
1 medium sweet potato (about 8 ounces)
1/2 medium yellow onion
1/4 cup panko breadcrumbs
1 large egg, lightly beaten
2 cloves garlic, minced
2 tablespoons finely chopped fresh parsley
1 teaspoon fine salt
1 teaspoon ground cumin
1/2 teaspoon smoked paprika
3 tablespoons vegetable oil

For the yogurt sauce:
1/2 cup plain Greek yogurt
1 1/2 teaspoons Sriracha hot sauce
1/8 teaspoon ground cumin
1/8 teaspoon fine salt