Preheat oven to 37°5 and line a cookie sheet with aluminum foil (optional, just makes clean up easier).
Cut off stem of squash, then cut in half length-wise. Place squash flesh-side down on cookie sheet and bake for 35-45 minutes, depending on how big your squash is. It’s done when a fork easily punctures the skin.
When the squash is cooked, gently rake a fork across the flesh-side of the squash, making "spaghetti". Continue until all the squash is made into "pasta".
While the squash is baking, in a bowl, combine meat, herbs, and spices. Roll into meatballs and set aside.
In a large, deep skillet, heat fat over medium-high heat. When hot, add meatballs and brown.
While the meatballs are browning, mix the tomato sauce and sour cream together.
Pour sauce over browned meatballs, reduce heat to medium-low, cover, and cook for 15-30 minutes, depending on the size of your meatballs and how well done you like them.