01 - Combine ground turkey, grated onion, garlic, breadcrumbs, egg, parsley, oregano, salt, and pepper in a large bowl. Mix gently until just incorporated.
02 - Using damp hands to prevent sticking, form mixture into 16-18 small meatballs, approximately 1.5 inches in diameter.
03 - Heat 1 tbsp olive oil in a large skillet over medium heat. Brown meatballs in batches, turning to sear all sides evenly for 5-6 minutes total. Transfer to a plate.
04 - Add 1 tbsp olive oil to the same skillet. Sauté diced onion and garlic until softened and fragrant, about 3 minutes.
05 - Stir in roasted red peppers and continue cooking for 2 minutes to develop flavor.
06 - Transfer skillet contents to a blender. Add tomato passata, chicken broth, cream, smoked paprika, salt, pepper, and chili flakes. Purée until completely smooth.
07 - Return blended sauce to skillet and bring to a gentle simmer over medium-low heat.
08 - Add browned meatballs to the sauce. Cover and simmer for 15-20 minutes until meatballs reach internal temperature of 165°F.
09 - Taste sauce and adjust seasoning as needed. Serve immediately over rice, pasta, or mashed potatoes, garnished with additional fresh parsley.