In a Dutch oven over medium-high heat, add beef, onion, and garlic and cook until beef is cooked through. Drain fat.
Add water, tomato sauce, diced tomatoes, Italian seasoning, salt, pepper, and sugar. Bring to a boil over high heat. Break spaghetti noodles in half and add to pan. Reduce heat to a simmer and cover. Cook, stirring often, until noodles are cooked through, 12 to 15 minutes.
Stir in the Parmesan and parsley just before serving.
In a large bowl, combine the flour, sugar, baking powder, baking soda, salt and nutmeg; cut in butter until mixture resembles coarse crumbs. Combine the eggs, buttermilk and vanilla; stir into the flour mixture just until moistened. Fold in pears.
Spoon into two greased 5-3/4x3x2-in. loaf pans. Bake at 350° for 35-40 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.