In a saucepan, combine 2 cups of long-grain white rice and 4 cups of water. Bring to a boil over high heat, then cover, reduce heat to low, and simmer for 15–20 minutes, until the rice is tender and the water is absorbed. Set aside.
Set your oven to 350°F (175°C) to prepare for baking the casserole.
Heat a large skillet over medium heat. Add 3 slices of turkey bacon and cook until browned on both sides, about 3–4 minutes per side. Remove bacon and set aside.
In the same skillet, add 1 chopped onion, 1 teaspoon minced garlic, and 1 chopped green bell pepper. Cook, stirring frequently, until the vegetables are soft, about 5–7 minutes.
Add 16 ounces of sliced smoked turkey sausage to the skillet. Cook until heated through, about 3–4 minutes.
Pour in 1 (14.5 oz) can of drained stewed tomatoes. Stir and cook just until heated through, about 2 minutes.
Stir in the cooked rice and 1 (14 oz) jar of spaghetti sauce. Season with dried Italian seasoning, salt, and black pepper to taste. Chop the cooked turkey bacon and mix it into the skillet.
Transfer the mixture to a large casserole dish. Cover with a lid or aluminum foil.
Bake in the preheated oven for 1 hour. Remove the lid or foil and bake for an additional 15 minutes to allow the top to set and flavors to meld.
Spoon the casserole onto plates or into bowls and serve hot.