Place all the ingredients (except for the marinara sauce) in a bowl and using your hands, combine until everything is incorporated.
Using about 1 tablespoon of the mixture per meatball, roll into balls and place on a plate. Try to not pack the meatballs too tight, they can become tough if you do.
Pour the marinara sauce into a 9x11 inch baking dish and top with the meatballs.
Cover the baking dish with foil and bake for 25-30 minutes.
Notes
Homemade Pesto Recipes:Classic Basil Pesto, Spinach Pesto, Kale Pesto, Nut Free Pesto,Pistachio PestoHomemade Marinara SauceTo Freeze: Roll into balls and place on a cookie sheet and freeze. After 30 minutes place the par-frozen balls in a ziploc bag, label and freeze. When ready, defrost in fridge for 24 hours or put them straight in the oven with sauce increasing cooking time by 5 minutes.