This Chicken Tetrazzini is a creamy, comforting dish full of tender chicken, sautéed mushrooms and peas, and tossed in a cheesy sauce. It’s an easy, flavorful meal the whole family will love!
Add mushrooms and onion and saute over medium heat until onion is softened and mushrooms are browned, about 5 minutes.
Add garlic, Italian seasoning, salt, and pepper and cook 1 minute.
Stir in flour until completely absorbed by the butter.
Add chicken stock and cream and whisk until smooth. Continue cooking over medium heat, whisking often, until slightly thickened (it won't be super thick in the end).
Stir in cooked chicken and peas.
Chicken Tetrazzini
Preheat the oven to 400 degrees if baking immediately.
Place spaghetti in a large pot of boiling, salted water and cook just until al dente. Drain.
Place cooked pasta in a 9×13" greased baking dish. Pour sauce over top and spread with a spatula over pasta so that it soaks down into the spaghetti.
Sprinkle with cheese and bake for 20 minutes or until golden and bubbly (see post above for make ahead instructions).