Chicken spaghetti lasagna layers tender noodles with a creamy chicken sauce, mozzarella, and cheddar. Cream of chicken soup and heavy cream or milk form the base, while onion, garlic, Italian seasoning, and optional tomatoes keep the casserole savory and balanced.
The recipe serves six in about 50 minutes. Lasagna noodles create defined layers, though spaghetti can be used for a looser casserole. A short rest after baking lets the creamy filling settle so portions lift cleanly from the dish.
Ingredients for Chicken Spaghetti Lasagna
The sauce uses 2 cups cooked shredded or diced chicken, one 10.5-ounce can cream of chicken soup, 1 cup heavy cream or milk, an optional 1/2 cup diced tomatoes, 1/2 cup finely chopped onion, 2 minced garlic cloves, 1 teaspoon Italian seasoning, salt, and black pepper.
For layering, prepare 8 to 10 lasagna noodles and 2 cups shredded mozzarella plus 1 cup shredded cheddar. Fresh parsley is added after baking. Rotisserie chicken is a useful shortcut as long as the skin and bones are removed.
If you enjoy this recipe, you may also like Chicken Broccoli Potato Casserole.
How to Make Chicken Spaghetti Lasagna
- Prepare. Heat the oven to 375°F and lightly grease a 9-by-13-inch baking dish.
- Cook noodles. Boil the lasagna noodles according to the package directions, drain, and lay them flat.
- Cook aromatics. Sauté the onion until soft, then add garlic and cook briefly.
- Make the filling. Stir in chicken, cream of chicken soup, heavy cream or milk, optional tomatoes, Italian seasoning, salt, and pepper. Simmer for 5 minutes.
- Layer. Arrange noodles, chicken mixture, mozzarella, and cheddar in repeated layers, finishing with cheese.
- Bake. Cook for 25 to 30 minutes, until bubbling and golden.
- Rest. Wait 5 to 10 minutes, garnish with parsley, and cut into portions.
For storage details after serving, the USDA leftovers and food safety guidance.
Use Fully Cooked Chicken
This casserole begins with 2 cups cooked chicken rather than raw meat. Shredded chicken distributes smoothly through the sauce, while small diced pieces create more distinct bites. Rotisserie chicken, poached breasts, or leftover roasted chicken all work.
Remove skin, bones, and any firm cartilage before measuring. If the chicken is heavily seasoned, taste the finished sauce before adding salt. Keep the pieces bite-size so the layers remain level and the casserole can be sliced without pulling out long strands.
If you enjoy this recipe, you may also like Cheesy Beef Enchilada Skillet.
Cook the Noodles Until Flexible
Boil 8 to 10 lasagna noodles according to the package instructions. They need to be flexible enough to layer without cracking but should not be excessively soft because they cook again in the sauce. Stir during the first minutes so the sheets do not stick together.
Drain and arrange the noodles in a single layer on a lightly oiled tray or clean towel. Do not leave them piled in the colander, where starch can glue them together. If using spaghetti instead, cook it just to al dente and fold it into the chicken mixture before transferring to the dish.
Build Flavor with Onion and Garlic
Cook 1/2 cup finely chopped onion in a little butter or oil over medium heat until softened. Add the 2 minced garlic cloves only near the end and cook until fragrant. Garlic can turn bitter if it browns before the creamy ingredients enter the pan.
Small, even onion pieces disappear into the sauce more successfully than large chunks. If using the optional diced tomatoes, drain excessive juice before adding them so the sauce remains thick enough for layering.
Make a Smooth Creamy Chicken Mixture
Add the cooked chicken, cream of chicken soup, 1 cup heavy cream or milk, optional tomatoes, Italian seasoning, salt, and pepper. Stir until the condensed soup is completely loosened and the chicken is evenly coated, then simmer gently for about 5 minutes.
Heavy cream creates a richer, thicker filling. Milk gives a lighter consistency and may need an extra minute of gentle simmering. Avoid a hard boil because dairy can scorch against the bottom of the pan. The mixture should be spoonable and creamy, not watery.
Layer Sauce and Cheese Evenly
Place a thin coating of chicken mixture on the bottom of the greased baking dish, then add a layer of noodles. Spread more chicken mixture across the pasta and sprinkle with both mozzarella and cheddar. Repeat until the ingredients are used.
Finish with a generous cheese layer, reserving enough of the 2 cups mozzarella and 1 cup cheddar to cover the surface. Bring sauce and cheese close to the edges so exposed noodle corners do not dry during baking. Keep each layer level rather than piling filling in the center.
Bake Until the Center Bubbles
Bake at 375°F for 25 to 30 minutes. Look for active bubbling at the edges and completely melted cheese with light golden spots. If the top reaches the desired color early, tent it loosely with foil while the center continues heating.
The ingredients are already cooked, but the center still needs time to become hot and the layers need moisture to exchange. A glass dish lets you see bubbling along the sides; with an opaque pan, insert a thin knife near the middle and check that it comes out hot.
Rest Before Cutting
Set the casserole aside for 5 to 10 minutes after baking. Straight from the oven, the sauce and melted cheese are fluid and the layers slide. Resting allows the noodles to absorb a little sauce and gives the cheese enough structure for cleaner servings.
Cut with a sharp knife and lift portions with a broad spatula. Add fresh parsley only after the rest so it remains bright. If using spaghetti, serve with a large spoon rather than expecting squared portions.
Troubleshooting
- Dry noodles: Extend sauce and cheese to the edges and do not overcook pasta first.
- Runny slices: Drain tomatoes, simmer the filling for 5 minutes, and rest before cutting.
- Dense filling: Add a splash of milk if condensed soup remains too thick.
- Top browns too early: Cover loosely with foil.
- Noodles stick together: Lay cooked sheets flat immediately after draining.
Make-Ahead, Storage, and Reheating
Assemble the casserole up to 1 day ahead, cover, and refrigerate. Bake cold casserole a little longer, keeping it covered for the first part so the center heats before the cheese browns. For food safety, refrigerate within 2 hours of assembly.
Store cooled leftovers airtight for up to 4 days. Reheat individual portions in the microwave or cover a larger portion and warm at 350°F. A spoonful of milk around the edges helps refresh sauce absorbed during storage. The baked casserole can be frozen in portions for up to 2 months and thawed overnight before reheating.
Conclusion
Cook lasagna noodles and prepare a creamy mixture of sautéed onion, garlic, cooked chicken, cream of chicken soup, cream or milk, optional tomatoes, and seasoning. Layer noodles, chicken filling, mozzarella, and cheddar. Bake at 375°F for 25 to 30 minutes, then rest 5 to 10 minutes before serving.
Frequently Asked Questions
- → Can I use rotisserie chicken?
Yes. Remove the skin and bones, then shred or dice two cups of cooked meat.
- → Can spaghetti replace lasagna noodles?
Yes. Cook it just to al dente and make a scoopable casserole, though it will not form the same defined layers.
- → Can chicken spaghetti lasagna be assembled ahead?
Yes. Cover and refrigerate it for up to 1 day, then allow a little extra baking time from cold.
- → Why should the casserole rest before cutting?
The pause lets the creamy filling settle and helps the noodle and cheese layers hold their shape.