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chicken tetrazzini pasta in a white baking dish with a fork full of pasta

Loaded Vegetable Chicken Tetrazzini made with Rotisserie Chicken

An easy Chicken Tetrazzini recipe loaded with fresh vegetables and rotisserie chicken. It's the perfect weeknight chicken casserole.
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Course: Casserole, dinner, weeknigh dinner
Cuisine: Amercian
Keyword: baked chicken, chicken casserole, rotisserie chicken
Prep Time: 25 minutes
Cook Time: 35 minutes
Total Time: 1 hour
Servings: 8
Author: Laura Franco

Ingredients 

  • 13.5 oz box whole wheat spagehetti
  • 2.5 cup rotisserie chicken (chopped into bite-sized pieces)
  • 1 cup sliced mushrooms
  • 1 cup broccoli floret peices
  • 1/2 cup chopped carrots
  • 1/2 cup chopped celery
  • 3 tbsp butter
  • 2 tbsp flour
  • 1/2 chicken bouillon cube
  • 2-2/3 cup pasta water – divided into 2-1/2 cups and ¼ cup
  • 1 cup evaporated milk
  • 1 cup finely grated parmesan cheese - divided 2/3 cup and 1/3 cup
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon paprika (Not smoked)
  • salt and pepper
  • fresh thyme leaves for garnish

Instructions

  • Preheat oven to 375°.
  • Spray a large baking dish with non-stick cooking spray and set aside.
  • Spray a large 13x9 baking dish with non-stick cooking spray.
  • Break the spaghetti in half and cook per the package instructions al dente.
  • Before draining the cooked pasta, save 2-1/2 cups and an extra ¼ cup of the pasta water.
  • Dissolve the bouillon cube into 2-1/2 cups of pasta water and set aside.
  • While the pasta is cooking, slice the mushrooms and chop the carrots, broccoli, and celery into bite-sized pieces.
  • Melt butter in a large skillet.
  • Add mushrooms and cook on medium heat for 3-4 minutes until they are soft.
  • Stir in flour. Mushrooms will become coated with the flour-butter mixture.
  • Slowly add the pasta bouillon water into the skillet, stirring constantly.
  • Add the broccoli, carrots, and celery.
  • Bring the mixture to a boil and reduce it to a simmer and cook for 2-3 minutes until it thickens.
  • Add paprika, nutmeg, salt, and pepper.
  • Reduce the heat and add the milk, extra 1/4 cup of pasta water, and 2/3 cups of cheese, and stir until the cheese is fully melted.
  • Add chicken and continue to stir.
  • Fold in the cooked pasta.
  • Transfer the mixture to a large baking dish.
  • Top with the remaining 1/3 cup of cheese and bake uncovered for 25 minutes.

Notes

Krazy Kitchen Mom Tips
  • This recipe is the perfect make-ahead meal. Make as instructed but do not bake it. Store it covered, in the refrigerator overnight. Take it out of the refrigerator 1 hour before you plan to bake it and bake as instructed.
  • We love this recipe for leftovers, simply microwave leftovers on a microwave plate for 1-2 minutes.