Preheat oven to 375 °F (191 °C) and line a large baking sheet with wax paper.
In a large bowl, add all the ingredients of the meatballs then using your hands, gently combine everything together, being careful to not overmix.
Using a medium cookie scoop (or two tablespoons), form into balls and place onto wax paper.
In a large cast iron skillet, heat up 1 tablespoon of avocado oil over medium-high heat. Add the meatballs to the skillet and brown two sides, making sure you don't cook the meatball entirely.
Once browned, place in oven to finish cooking through, about 10-13 minutes.
Once done, remove from oven and let cool for 10-15 minutes before serving.