01 -
Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 -
In a large bowl, gently mix ground chicken, egg, breadcrumbs, Parmesan, garlic, parsley, onion powder, paprika, salt, and pepper until just combined.
03 -
Shape mixture into golf-ball-sized balls and place on the prepared baking sheet.
04 -
Bake for 20 to 25 minutes, until cooked through and golden on top.
05 -
While chicken bakes, melt butter in a saucepan over medium heat. Whisk in flour and cook for 1 minute. Gradually whisk in milk until smooth and slightly thickened.
06 -
Stir in Parmesan, mozzarella, nutmeg, salt, and pepper until the sauce is creamy.
07 -
Transfer baked chicken balls to a baking dish, pour sauce over top, and broil for 3 to 5 minutes until bubbly and lightly golden.
08 -
Serve warm over mashed potatoes or cauliflower purée, garnished with fresh herbs.