01 - Preheat oven to 400°F. Line a baking sheet with parchment paper. In a large bowl, combine ground turkey, breadcrumbs, Parmesan, egg, garlic, parsley, salt, and pepper. Mix until just combined.
02 - Form mixture into 1-inch meatballs and arrange on prepared baking sheet. Bake for 15-18 minutes until cooked through and lightly browned.
03 - While meatballs bake, bring a large pot of salted water to a boil. Cook egg noodles according to package instructions, then drain and set aside.
04 - Heat olive oil in a large skillet over medium heat. Add onion and cook until softened, about 3-4 minutes. Add mushrooms and cook until softened and lightly browned, about 5 minutes. Add garlic and sauté for 1 minute.
05 - Sprinkle flour over the vegetables and stir for 1 minute to cook out the raw flour taste.
06 - Gradually whisk in chicken broth, Worcestershire sauce, and Dijon mustard. Bring to a simmer and cook until slightly thickened, about 3-4 minutes.
07 - Reduce heat to low. Stir in sour cream until smooth. Season sauce with salt and pepper to taste.
08 - Add baked turkey meatballs to the sauce and gently simmer for 2-3 minutes to heat through.
09 - Serve meatballs and stroganoff sauce over egg noodles. Garnish with fresh dill or parsley if desired.