This is hands down the best chicken tetrazzini ever. It's creamy, cheesy and full of mushrooms and chicken. the flavors are amazing. Leftovers freeze well in individual containers.
Chicken Tetrazzini:
12 oz. thin spaghetti or linguine
4 c. shredded rotisserie chicken
1 lb. button mushrooms, thickly sliced
1 medium onion, finely chopped
3-4 garlic cloves, minced
2 T. olive oil
Creamy Sauce:
4 T. unsalted butter
1/3 c. all-purpose flour
2 1/2 c. low-sodium chicken broth
1 T. freshly squeezed lemon juice
1 1/2 c. half and half (or 3/4 c. milk and 3/4 c. heavy cream)
1 t. sea salt or to taste
1/4 t. freshly ground black pepper
1/4 c. freshly chopped parsley, plus more for garnish
1 1/2 c. shredded mozzarella cheese
Preheat oven to 350 degrees.
Cook pasta in a large pot of well salted water until al dente, about 6 minutes or according to package directions; rinse to stop the cooking process; drain; set aside.
Shred 4 c. meat from a rotisserie chicken into bite-sized pieces; set aside.
Place a large pot over medium-high heat; add 2 T. oil; add mushrooms; sauté 3 minutes or until softened. Add onions; cook until onions are soft and golden, 5-7 minutes. Add garlic; sauté 1-2 minutes until fragrant. Set aside with the chicken.
Sauce:
In the same large pot, melt butter; whisk/stir in flour until lightly golden, 1 1/2 minutes. Add chicken broth, lemon juice, salt and pepper; whisk until smooth. Add half and half; bring to a simmer. Season sauce with more salt and pepper, to taste.
Return chicken, mushrooms, onions and pasta to the large pot; sprinkle in parsley; stir to combine. Sprinkle top generously with mozzarella; cover; bake for 30 minutes; remove cover; bake 15 minutes.
Or, if wanting to bake in a 13 x 9 casserole dish, cover with aluminum foil: bake 25-30 minutes; bake uncovered another 10-15 minutes. It bakes 5-10 minutes faster in a casserole dish.
Serve.
8 servings.