Make the Meat Sauce

1. In a large skillet over medium heat, heat 2 Tablespoons olive oil.
2. Add 1 diced onion to the olive oil and cook until tender.
3. Next, add 2 cloves minced garlic and stir until fragrant (about 1 minute).
4. Put 1 pound ground beef in the skillet and cook and crumble until cooked through.
5. Pour 32 ounces of marinara sauce over the cooked ground beef mixture, season with ¾ teaspoon salt and ¼ teaspoon pepper and cook 10-25 minutes to thicken.

Make the Stuffed Shells

1. While the sauce is cooking, boil a large pot of water over medium high heat.
2. Once boiling, add 6 ounces jumbo pasta shells to the water and cook 10 minutes.
3. Preheat the oven to 400°F and oil a 9×13-inch baking pan with 3-4 Tablespoons olive oil.
4. Drain the shells and place in the prepared baking dish.
5. Stuff the cooked jumbo shells with 2 Tablespoons of meat sauce until all of the shells are filled. Stuff additional meat sauce into shells looking like they could use some more.
6. Cover the pan with foil and bake for 30 minutes.
7. Garnish with dairy-free mozzarella (optional) and fresh basil.