Preheat your oven to 375°F (190°C). Dice the onion and mince the garlic.

In a large oven-safe pan or casserole dish, add the spaghetti (uncooked), pasta sauce, bone broth or water, diced onion, minced garlic, and parsley.

Stir everything together to ensure the spaghetti is evenly coated with the liquid.

Place in the preheated oven and cook for 20 minutes.

After 20 minutes, carefully remove the pan from the oven and stir the spaghetti to ensure even cooking.

Return the pan to the oven and continue cooking for an additional 20 minutes.

After the 40 minutes of cooking, turn off the oven. Remove the pan from the oven and sprinkle the shredded cheese evenly over the top of the spaghetti.

Place the pan back in the warm oven (with the heat off) for a few minutes until the cheese is fully melted.

Once the cheese is melted, remove from the oven and let the spaghetti sit for a minute before serving.

You can add or serve over your favorite protein like ground beef.