Easy Chicken Tetrazzini Casserole
Creamy, cheesy baked pasta casserole with shredded chicken, mushrooms, and a lemony cream sauce.
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Natashas Kitchen- •12 ounces Pasta (thin spaghetti or other)cook al dente in salted water
- •1 tsp Saltplus more for pasta water and to taste
- •4 cups Shredded chickenfrom rotisserie chicken or cooked chicken breast, bite-size pieces
- •2 pounds Chicken breast(optional)alternative to rotisserie chicken; season and sauté then shred
- •1 pound White mushroomsthickly sliced
- •1 medium Onionfinely chopped
- •3 to 4 Garlic clovesminced
- •1/4 cup Fresh parsleyfinely chopped, plus more for garnish
- •1 Tbsp Lemon juicefreshly squeezed
- •2 Tbsp Olive oil
- •4 Tbsp Butter
- •1/4 cup Flourall-purpose
- •2 1/2 cups Chicken broth
- •1/4 tsp Black pepperplus more to taste
- •1 1/2 cups Half-and-halfor use equal parts milk and heavy cream
- •1 1/2 to 2 cups Mozzarella cheeseshredded, for topping
- 1
Preheat oven to 350°F (175°C).
1 min
- 2
Cook pasta in salted water according to package directions until al dente. Drain and rinse to stop cooking; set aside.
12 min
- 3
Prep ingredients: shred chicken into bite-size pieces; slice mushrooms; finely chop onion; mince garlic; chop parsley; squeeze lemon juice.
10 min
- 4
Heat a large Dutch oven/heavy pot over medium-high heat. Add olive oil, then sauté mushrooms about 3 minutes until softened.
4 min
- 5
Add onion and cook 5–7 minutes, stirring occasionally, until softened.
7 min
- 6
Add garlic and cook 1–2 minutes until fragrant. Transfer mushroom mixture to a separate dish.
2 min
- 7
In the same pot, melt butter. Stir in flour and cook 1–2 minutes, stirring constantly, until lightly golden.
2 min
- 8
Whisk in chicken broth, lemon juice, salt, and black pepper until smooth. Stir in half-and-half and bring to a simmer. Season with more salt and pepper to taste.
6 min
- 9
Add cooked pasta, shredded chicken, and mushrooms back to the pot. Stir in parsley and mix until evenly coated.
3 min
- 10
Sprinkle the top generously with shredded mozzarella. Cover and bake 30 minutes.
30 min
- 11
Uncover and bake an additional 15 minutes until golden and bubbly.
15 min
- 12
Garnish with additional parsley if desired. Serve warm.
2 min
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