This is lasagna built on Alfredo instead of tomato sauce, and it comes together in one saucepan plus a 9×13 pan. You simmer butter, garlic, cream, and Parmesan into a sauce, then stack noodles, chicken, broccoli, and mozzarella three times.
The whole thing goes in a 375 degree oven for 45 minutes. You get six big servings out of it, which makes it a solid weeknight dinner with leftovers for lunch the next day.
One thing to know before you start: the sauce is the only place the flavor comes from, so don't rush the simmer. It needs to thicken enough to coat a spoon, or the layers will slide and the bake will turn watery.
Step-by-Step Instructions
1. Heat the oven
Set a rack in the middle and turn the oven to 375°F. Grease a 9×13 inch baking pan lightly, though the sauce on the bottom does most of that work.
2. Start the sauce
Melt the butter in a saucepan over medium heat. Add the garlic and cook for about 30 seconds, just until it smells sweet. Don't let it brown.
3. Simmer the cream
Pour in the cream and add the pepper. Stir constantly and bring it just to a boil, then drop the heat to low. Keep it at a gentle simmer.
4. Melt in the Parmesan
Add the Parmesan a handful at a time, stirring until each addition disappears. Keep going until the sauce coats the back of a spoon, then take it off the heat.
5. Build the first layer
Spread a good ladleful of sauce across the bottom of the pan. Lay 3 noodles over it, then scatter on a third of the chicken, a third of the broccoli, a third of the mozzarella, and more sauce.
6. Repeat the layers
Make a second stack the same way: noodles, chicken, broccoli, mozzarella, sauce. Then a third stack of noodles.
7. Finish the top
Pour the rest of the sauce over the last noodle layer and cover it with the remaining mozzarella. Use it all. The top should be fully covered.
8. Bake covered
Cover the pan with foil and bake for 30 minutes. The foil traps steam so the noodles soften and the middle heats through.
9. Brown the cheese
Take off the foil and put the pan back in for 15 more minutes. The cheese should be bubbling and patchy brown at the edges.
10. Rest before cutting
Set the pan on a rack and leave it alone for 10 to 15 minutes. Cut into six squares and serve.
Variations
- Add 8 ounces of sliced mushrooms to the chicken layer. Saute them first so they don't release water in the oven.
- Swap the broccoli for chopped spinach. Squeeze it very dry and use about 10 ounces.
- Stir a teaspoon of Italian seasoning into the sauce if you want a herby version.
- Use penne or ziti instead of lasagna sheets and bake it as a pasta casserole in the same pan.
How to Store Broccoli Chicken Alfredo Lasagna
Refrigerator
Cover tightly and keep it in the fridge for up to 4 days. Reheat single portions covered at 350°F for about 20 minutes.
Freezer
Freeze baked portions in airtight containers for up to 2 months. Cream sauces can separate a little on thawing, so reheat gently and stir.
Reheating
The oven gives the best texture. Microwave works for a quick lunch, but the noodles go soft.
Frequently Asked Questions
Q: Can I make this ahead of time?
Yes. Assemble it, cover, and refrigerate for up to 24 hours before baking. Add about 10 minutes to the covered bake time since it starts cold.
Q: Do I have to cook the noodles first?
With regular dried lasagna sheets, yes. If you use oven-ready no-boil sheets, skip that step and thin the sauce with about 1/2 cup extra cream.
Q: How do I know the chicken is safe to eat?
Use an instant-read thermometer in the thickest part of the chicken layer. It should read 165°F. Color alone won't tell you.
Q: Can I use jarred Alfredo sauce?
You can. You'll need about 3 cups to replace the homemade sauce, and the dish gets saltier, so go easy on added salt.
Q: Why did my lasagna come out watery?
Usually wet broccoli or overcooked noodles. Dry the broccoli well and pull the noodles early. Resting the pan before cutting also helps.

Broccoli Chicken Alfredo Lasagna Recipe
A cheesy layered lasagna with shredded rotisserie chicken, chopped broccoli, and a quick homemade garlic Parmesan Alfredo sauce. Six generous servings.
Ingredients
Instructions
- 1Heat the oven — Set a rack in the middle and turn the oven to 375°F. Grease a 9×13 inch baking pan lightly, though the sauce on the bottom does most of that work.
- 2Start the sauce — Melt the butter in a saucepan over medium heat. Add the garlic and cook for about 30 seconds, just until it smells sweet. Don't let it brown.
- 3Simmer the cream — Pour in the cream and add the pepper. Stir constantly and bring it just to a boil, then drop the heat to low. Keep it at a gentle simmer.
- 4Melt in the Parmesan — Add the Parmesan a handful at a time, stirring until each addition disappears. Keep going until the sauce coats the back of a spoon, then take it off the heat.
- 5Build the first layer — Spread a good ladleful of sauce across the bottom of the pan. Lay 3 noodles over it, then scatter on a third of the chicken, a third of the broccoli, a third of the mozzarella, and more sauce.
- 6Repeat the layers — Make a second stack the same way: noodles, chicken, broccoli, mozzarella, sauce. Then a third stack of noodles.
- 7Finish the top — Pour the rest of the sauce over the last noodle layer and cover it with the remaining mozzarella. Use it all. The top should be fully covered.
- 8Bake covered — Cover the pan with foil and bake for 30 minutes. The foil traps steam so the noodles soften and the middle heats through.
- 9Brown the cheese — Take off the foil and put the pan back in for 15 more minutes. The cheese should be bubbling and patchy brown at the edges.
- 10Rest before cutting — Set the pan on a rack and leave it alone for 10 to 15 minutes. Cut into six squares and serve.
Food safety: Check the thickest part with a food thermometer. Poultry must reach 165°F (74°C); color alone is not reliable.




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