Beach Bum's Spaghetti Casserole

According to Beach Bum, this is much better than it has any right to be! Fits in with House, me thinks. We find him far more lovable than he ought to be... ;)

1. Preheat oven to 400 degrees F.
2. Crumble 1lb ground beef into large skillet and brown over med-high heat. Add 1 onion, chopped, and 1 clove garlic, sliced or pressed.
3. Sautee briefly until the beef is cooked through.
4. Remove the skillet from the heat and transfer meat to large mixing bowl (de-fat if desired).
5. Add one can (10.75 ounces) cream of mushroom soup, 1.5 cups favorite tomato-based pasta sauce, 1 cup shredded cheddar cheese, 4 cups previously cooked spaghetti (can be cooked the night before; this is 8oz uncooked), 1/2 cup of water and stir to mix.
6. Transfer to 13x9/ 3qt baking dish (I recently used a deep 9x9 and it worked well), sprinkle with more shredded cheddar and 1 Tablespoon Parmesean cheese.
7. Bake until bubbling throughout and cheese is melted, about 18-20 minutes.