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Dinner · Part 2 of 3: Instructions

Creamy Chicken Spaghetti Lasagna Bake for Comforting Dinners Step-by-step instructions

A close-up of a creamy chicken spaghetti lasagna bake with a golden brown cheese crust.
Prep
Cook
Total
Serves
6
Includes 10 min resting

Before you start

Start by preheating your oven to 375°F (190°C) to ensure it reaches the correct temperature before you begin the assembly. Gather all your ingredients, ensuring the chicken is shredded and the pasta is cooked according to the instructions on the package.

Prepare your baking dish by lightly greasing it if necessary, though the sauce typically prevents sticking. Having all components ready on your workspace will allow for a smooth assembly process, ensuring the pasta remains warm and the sauce stays loose before it enters the oven.

Ingredients at a glance (5)
  • 2 cups shredded chicken, cooked
  • 1 lb spaghetti, cooked al dente
  • 2 cups creamy sauce, store-bought or made ahead
  • 2 cups shredded mozzarella cheese
  • Fresh parsley, for serving

Instructions

Mixing the Base

  1. Prepare the pasta and chicken base
    Cook the spaghetti in a large pot of boiling salted water until al dente. Drain well and return to the bowl. Stir in the shredded chicken and the creamy sauce until every strand of pasta is thoroughly coated in the mixture.
    Look for The sauce should evenly coat the pasta and chicken without being too dry.
    Tip Ensure the pasta is cooked al dente so it maintains its texture during the final baking process.

At the end of this phase, the pasta should be completely and evenly coated with the creamy sauce and shredded chicken. The mixture should look cohesive and glossy, with no dry patches of pasta visible. It should be ready to transfer into the baking dish, with the sauce providing enough moisture to bind the ingredients together without being overly runny.

Assembling the Dish

  1. Assemble the bake
    Transfer the chicken and pasta mixture into a 9x13 inch baking dish, spreading it out into an even layer. Sprinkle the shredded mozzarella cheese generously over the top, ensuring full coverage to create a perfect melted crust while it bakes in the oven.
    Look for The dish should be filled evenly with the pasta mixture and topped completely with cheese.
    Tip Using freshly shredded cheese helps achieve a better melt compared to pre-shredded varieties.

The dish should be filled with the pasta mixture spread in an even, level layer across the bottom of the pan. The top should be covered generously and uniformly with the shredded mozzarella cheese. Ensure the cheese reaches the edges of the dish to create a complete seal, which helps to maintain moisture and promotes even browning during the baking process.

Baking and Broiling

  1. Bake and brown
    Bake in a preheated oven at 375°F (190°C) for 20 minutes until the sauce is bubbling. Finally, broil for 2 to 3 minutes until the cheese is golden brown and reaches an internal temperature of 165°F (74°C) for the chicken. Garnish with fresh parsley before serving.
    Look for The cheese should be golden brown and bubbling across the entire surface of the dish.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Keep a close eye on the broiler as the cheese can go from perfect to burnt very quickly.

When finished, the casserole should be bubbling vigorously and the cheese topping should be golden brown with some darker, toasted spots.

The aroma should be savory and rich, indicating the sauce has heated through and the cheese has melted perfectly. The dish should feel solid but slightly yielding when touched, and the internal temperature should hit 165°F (74°C) for the chicken.

Common mistakes

A common mistake is overcooking the pasta before it hits the oven; ensure it remains firm, as it will continue to soften during the baking phase. Another error is failing to fully coat the pasta in the sauce, which can lead to dry patches.

Avoid using excessive heat during the final broiling step, as it can burn the cheese before the center of the bake is hot. Always monitor the oven closely during the last few minutes to ensure the topping reaches the desired color without burning.

How to tell it’s done

The dish is considered done when the sauce is bubbling visibly around the edges of the baking dish and the mozzarella cheese has formed a golden-brown, blistered crust. Because the chicken is already cooked, the goal is to heat the entire casserole through until it reaches an internal temperature of at least 165°F (74°C).

Using an instant-read thermometer inserted into the center of the dish will ensure safety and perfection. Allow the casserole to rest for about 10 minutes before serving to let the sauce set slightly.

  • 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?
  • Can other types of cheese be used?

Also in Part 3: variations (Spicy Chicken Bake, Spinach and Chicken Bake), 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)