Creamy Italian Chicken & Spaghetti Casserole


Creamy Italian Spaghetti & Chicken Casserole

Course Italian, Main Course
Cuisine American, Italian
Author Catherine’s Plates


  • large pot with lid & strainer
  • large skillet & spatula
  • cutting board & sharp knife
  • measuring spoons & measuring cups
  • 9 x 13 baking dish


  • 10-12 oz uncooked spaghetti
  • 1/2 TBS salt (to salt water for spaghetti)

White Sauce

  • 4 TBS butter
  • 1 medium green bell pepper, diced
  • 1/2 medium yellow onion, diced
  • 2 tsp minced garlic
  • 1/8 tsp salt
  • 1/4 tsp black pepper
  • 1/4 cup all-purpose flour
  • 1/4 cup heavy whipping cream
  • 1/2 cup chicken broth
  • 1/2 cup milk
  • 1/4 tsp Italian seasoning
  • 14 oz can diced tomatoes with juice
  • 8 oz Italian blend cheese shredded, DIVIDED
  • 3-4 cups cooked shredded chicken (rotisserie, canned, baked, slow cooker)
  • fresh parsley for garnish


  • Bring a large pot of water to a boil. Add 1/2 TBS salt & uncooked spaghetti. Cook until spaghetti is al dente. Drain & leave in pot. Set aside.
  • In a large deep skillet add butter and allow to sizzle. Add in bell pepper and onion and cook until softened. Season with 1/8 tsp salt & 1/4 tsp pepper. Stir in minced garlic for 30 seconds. Add in all-purpose flour & stir for 1 minute.
  • Whisk in heavy whipping cream, chicken broth, and milk until thickened. Season with Italian seasoning. Taste for seasoning adjustments if needed. Turn off heat & remove from burner.
  • Add in canned diced tomatoes with juice, 4oz Italian blend shredded cheese, shredded cooked chicken, and cooked & drained spaghetti. Stir until well blended.
  • Pour mixture into a prepared (spray with non-stick cooking spray) 9 x 13 baking dish evenly. Top with remaining 4 oz Italian blend cheese.
  • Bake in 375 degree preheated oven for 15-20 minutes until cheese has melted and casserole is heated through & bubbly. Garnish with fresh parsley if desired. Allow to rest for 5 minutes and cut into squares. Enjoy.

3 thoughts on “Creamy Italian Chicken & Spaghetti Casserole”

  • 5 stars
    This is AWESOME! Everyone in my family loved it. Preparing it was not complicated- ingredients were already in my cabinet- used canned chicken – plan to use leftover rotisserie chicken next time. A real winner!!

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