Chicken Tetrazzini Casserole is such a classic and comforting casserole. This is creamy, cheesy and hidden with fresh mushrooms and peas. Topped with parmesan cheese and crispy breadcrumbs this is the perfect casserole!
Preheat oven to 350 degrees. Spray a 9x13 inch casserole dish with cooking spray. Set aside.
In a large pot cook the pasta according to directions and cook until al dente. Drain. In a medium sized saucepan add the olive oil, mushrooms, garlic, and peas. Cook until tender. Add the flour and cook for an additional minute.
Add the simply better chicken gravy and half and half. Salt and pepper to taste. Let simmer until it starts to thicken. Add the sauce to the spaghetti and toss with chicken until coated. Spread in your 9x13 inch pan. Top with shredded parmesan cheese and bread crumbs. Drizzle melted butter on top.
Bake for 30-40 minutes until heated through and the bread crumbs are brown on top.
Alyssa Also Recommends: Want to make this even easier? Here are a few products that I LOVE:•Nordic Wave 13x9 Baking Dish •Calphalon Cookware Set •Utopia Kitchen Cooking Knives