1Cook spaghetti in a pot of boiling water until al dente. Drain.
2Place a rack in the center of the oven and preheat to 350℉.
3Chop and lightly sauté onion and bell pepper in olive oil, for 3-5 minutes.
4In a large bowl, combine spaghetti, soup, sherry, onion, and green bell pepper.
5Add cheese, ham, mushrooms, and pimientos (if using).
6Season with salt and pepper.
7Pour into a 14" x 9" casserole dish.
8Sprinkle panko on top to cover noodles. This may require more or less than 2 cups, don't make it too thick, just a medium to light covering. Drizzle the top with olive oil.