In the skillet or Dutch oven over medium-high heat, add grapeseed or sunflower oil and heat for 1 minute. Carefully transfer the meatballs into the pan and allow to cook for 2 minutes, turn and cook for 2 more minutes and continue turning until the meatballs appear cooked on the outside. Add the zucchini noodles (zoodles) and pour the marinara over the top of the zoodles and meatballs.
Transfer to the oven and bake for 20 minutes, until the meatballs are cooked through.