French Onion Meatball Skillet

1. Preheat oven to 400°F. In a large oven-safe skillet, heat olive oil, add onions + ½ tsp salt. Cook over medium heat 30–35 min, stirring occasionally, until deeply caramelized.
2. Meanwhile, mix all meatball ingredients in a bowl. Form 12 meatballs (about 1½ inches). Bake on a parchment-lined sheet for 20 min. Increase oven temp to 425°F.
3. Sprinkle flour over onions and stir to coat. Slowly add broth while stirring. Add Worcestershire, remaining salt, and thyme. Simmer 3–5 min until thickened.
4. Nestle meatballs into the skillet, top with shredded Gruyère.
5. Bake at 425°F for 10 min, until cheese is melted and lightly golden.

Serve over mashed sweet potatoes with a green veggie and enjoy ✨