Make meatballs while the squash is cooking - I mix an egg along with 2 pounds of grass fed beef, 1/4 cup of almond meal, parsley, oregano, garlic, and basil. Shape into meatballs and cook in a pan with some coconut oil. Turn to cook evenly. Once the meatballs are cooked, add marinara sauce, let simmer and then serve over the spaghetti squash. I like to have extra meatballs, you can do this with 1 pound of meat as well, just reduce the amond meal a bit.
Here's what the finished product looked like, I served mine with sauteed kale on the side when I put it together for my full meal.