01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - Toss the sweet potato fries with olive oil, smoked paprika, garlic powder, salt, and black pepper. Spread evenly on the prepared baking sheet.
03 - Bake fries for 30 to 35 minutes, flipping halfway through, until golden and edges are crisp.
04 - While fries bake, combine ground turkey, chopped onion, minced garlic, egg, parsley, Dijon mustard, smoked paprika, salt, and pepper in a large bowl. Mix gently until just combined.
05 - Shape the turkey mixture into 4 evenly sized patties.
06 - Heat olive oil in a large skillet over medium heat. Cook patties 5 to 6 minutes per side until golden brown and internal temperature reaches 165°F.
07 - Toast burger buns lightly if desired.
08 - Place turkey patties on buns and top each with lettuce, tomato, onion, and optional sauces.
09 - Serve burgers immediately with sweet potato fries on the side.