Combine the ground turkey, panko breadcrumbs, beaten egg, sautéed onion, minced garlic, smoked paprika, chopped parsley, salt, and pepper in a large bowl. Gently fold everything together until just combined — avoid overmixing to keep the meatballs tender.
Shape the mixture into uniform 1.5-inch balls, placing them on a parchment-lined baking sheet. Keep the meatballs roughly the same size for even cooking.
Heat the oil in a skillet over medium heat until shimmering. Carefully add the meatballs in batches, searing for about 2-3 minutes per side until golden brown and crispy on the outside.
Transfer the seared meatballs to the prepared baking sheet. Place in a preheated oven at 375°F (190°C) and bake for 15-20 minutes, or until the internal temperature reaches 165°F (74°C).
Remove the meatballs from the oven and let them rest for 5 minutes. They should be juicy, tender inside with a lightly crispy exterior, and filled with smoky aroma.
Serve the smoky turkey meatballs warm, with your favorite sauce or over pasta. Enjoy the tender, flavorful bites that carry a cozy, smoky warmth in every mouthful.