In a large bowl, combine all ingredients (except the sauce) by hand.
Form mixture into meatballs of 1 to 1 ½ ounces each, about the size of a walnut.
In a wide, deep skillet, heat olive oil over medium-high heat until it begins to shimmer. Cook the meatballs in batches, being careful not to crowd the pan, for 6 to 8 minutes or until the internal temperature reaches 150-160 F.
Transfer the cooked meatballs to a waiting plate lined with paper towels so they can drain. Serve with your favorite marinara sauce and garnish with fresh basil.
Oven Method
Follow steps 1 and 2 above and then line a rimmed baking sheet with parchment.
Space the meatballs about 2 inches or so apart on the sheet pan and bake at 400 F for about 15 minutes, or until the internal temperature reaches 150 to 160 degrees F.
Serve with your favorite marinara sauce and garnish with fresh basil.
Notes
Macros for 1 out of 4 servings (do not include optional sides):24g protein | 11g Carbs | 29g Fat | 408 Calories | 5g FiberThe meatballs can be cooled and stored in an airtight container, and placed in the fridge for up to a week. Or, they can be frozen for up to a month.