
Mix ground beef, breadcrumbs, Parmesan, egg, garlic, parsley, salt, pepper, and red pepper flakes. Don't overmix.
Form into 1.5-inch meatballs (about 16). Uniform size ensures even cooking.
Air fry at 400°F for 12-14 minutes, shaking once, until browned and 160°F internal.
Toss in marinara sauce. Serve over pasta, in sub rolls, or with toothpicks as appetizers.
Tip: 80/20 beef has enough fat to stay juicy — leaner beef makes dry meatballs. Mix gently and only until just combined. An ice cream scoop makes perfectly uniform meatballs. They freeze beautifully for meal prep.
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