Rachael's Chicken Spaghetti Casserole

In a large skillet, heat 1 tablespoon EVOO and 2 tablespoons butter over medium-high heat. When butter foams, add spaghetti and toast to deep golden and fragrant, then season with salt and pepper. Add stock or water to the pan and stir occasionally 7-8 minutes.

Meanwhile, heat remaining EVOO and butter in skillet. Add mushrooms, thyme and bay leaf, brown the mushrooms, then season with salt and pepper. Add shallots, celery and garlic, and stir 2 minutes more. Add flour and combine well, then whisk in wine, remaining 1 cup stock and half-n-half until thickened. Add chicken, pimientos and cheddar cheese, heat chicken through, then pour chicken into pasta and combine. Add a little hot sauce to taste. If pan is oven-safe, top with Swiss or Jack cheese and broil, or transfer to casserole dish and top with Swiss or Jack cheese and brown in center of oven under broiler. Garnish with parsley and chives.