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French Onion Skillet Meatballs

french onion skillet meatballs in a cast iron pan

Ingredients

Instructions

  1. Melt 2 tablespoons of the butter in a large skillet (cast-iron is a good choice) over medium heat. Add the onions, season with the sea salt, stir, and then cook over medium heat (stirring continuously) for 30 minutes to 1 hour, or until the onions have reduced significantly in size and have developed a deep caramel color.
  2. Mix the onions into the ground meat with the black pepper until evenly incorporated.
  3. Melt the additional 2 tablespoons of butter in the skillet and preheat the oven to 400 F. Roll the meat into 2 tablespoon-sized meatballs and place them in the skillet. Repeat for the entire batch and then drizzle the tops of the meatballs with the balsamic vinegar.
  4. Bake at 400 F for 35 minutes, or until the top of the meatballs are starting to brown.
  5. Remove from the oven, add the optional cheese and return to the oven for an additional 3 to 5 minutes, or until the top of the cheese is melted and starting to brown.
  6. Enjoy warm over zucchini noodles, gluten-free rice noodles, mashed cauliflower, or mashed potatoes.