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Dinner · Part 2 of 3: Instructions

Creamy Cheesy Rotel Chicken Spaghetti for an Easy Weeknight Dinner Step-by-step instructions

A golden, bubbling cheesy chicken spaghetti in a white baking dish.
Prep
Cook
Total
Serves
6
Includes 5 min resting

Before you start

Before beginning, ensure that your oven is preheated to 350°F (175°C). Have all your ingredients measured and ready to go. If your chicken is not already cooked, poach or roast it in advance and shred it into bite-sized pieces.

Make sure your baking dish is clean and ready, perhaps lightly greased with a small amount of oil or butter to prevent any sticking during the baking process.

Ingredients at a glance (4)
  • 1 lb spaghetti
  • 2 cups cooked chicken breast, shredded
  • 1 can diced tomatoes with green chilies
  • 2 cups shredded cheddar cheese

Instructions

Boiling the Pasta

  1. Prepare the Pasta
    Bring a large pot of salted water to a boil. Add the spaghetti and cook according to the package instructions until al dente. Drain the pasta thoroughly in a colander, ensuring no excess water remains.
    Look for The pasta should be firm to the bite.
    Tip Save a splash of pasta water if the sauce needs thinning later.

The pasta should be cooked until al dente, meaning it still has a slight bite to it. Once drained, it should be loose and not clumped together. Ensure the pasta is well-drained so that the sauce does not become watery during the final baking step, which helps maintain the rich, creamy consistency of the finished dish.

Mixing the Ingredients

  1. Combine Ingredients
    In a large baking dish, combine the cooked spaghetti, shredded chicken, and the can of diced tomatoes with green chilies. Mix well to ensure the tomatoes and chicken are evenly distributed throughout the pasta strands.
    Look for The mixture should look well-incorporated.
    Tip Use a large spoon to avoid breaking the pasta too much.

The mixture should look uniform, with the shredded chicken and diced tomatoes evenly distributed among the spaghetti strands.

If the mixture appears too dry, adjust by adding a small amount of moisture before adding the cheese topping. Everything should be well-coated and ready to be transferred to the oven for the final melting phase.

Baking to Perfection

  1. Bake and Serve
    Top the pasta mixture with the shredded cheddar cheese. Place the baking dish in a preheated 350°F (175°C) oven and bake until the cheese is melted and bubbling, ensuring the chicken reaches an internal temperature of 165°F (74°C). Serve immediately while hot.
    Look for The cheese should be golden and bubbling.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Watch the edges so the cheese does not burn.

The final phase is complete when the cheese has created a beautiful, golden-brown crust and the entire dish is steaming hot. The aroma should be savory and inviting, with the tang of the tomatoes and the richness of the cheese filling the kitchen. Check for the bubbling cheese and ensure the internal temperature is appropriate.

Common mistakes

A common mistake is overcooking the pasta before it goes into the oven, which can lead to mushy results. Ensure you drain the spaghetti when it is still slightly firm, as it will continue to cook during the baking process.

Another mistake is using too little cheese; do not be afraid to be generous with the topping, as it is the key to achieving that signature decadent texture.

How to tell it’s done

The dish is considered done when the cheese on top is completely melted, bubbling, and starting to turn slightly golden around the edges. When testing for doneness, ensure the center of the dish is hot throughout.

Since the chicken is already cooked, the primary goal is to ensure the internal temperature of the chicken reaches at least 165°F (74°C) and the pasta is heated through.

  • Poultry: 165°F (74°C) in the thickest part

Coming up in Part 3: common questions

  • Can this dish be made ahead of time?
  • What is the best way to reheat leftovers?
  • Does the sauce get too dry?

Also in Part 3: variations (Vegetable Boost, Creamy Mushroom), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)