If you want to prep these meatballs for later, here is the time to freeze them. They will keep in the freezer for up to 1 month.
If you want to eat them straight away heat an oven-safe metal or cast-iron skillet over medium heat. Once hot, add the meatballs and sauté for a few minutes, gently turning the meatballs to get a slight crust on either side. Then transfer to the oven and bake for 20-30 minutes or until golden brown on the edges and slightly dry to the touch.