Amazing 1-Hour Creamy Pesto Chicken Pasta Bake

By Adam Harris on November 20, 2025

Creamy Pesto Chicken and Broccoli Pasta Bake

If you’re anything like me, sometimes you just need a hug in a casserole dish, right? Well, stop looking because I’ve finally perfected the recipe for the ultimate Creamy Pesto Chicken and Broccoli Pasta Bake. This isn’t some fussy, complicated thing you save for holidays. No way! This is real-deal comfort food that comes together fast enough for a Tuesday night.

Creamy Pesto Chicken and Broccoli Pasta Bake - detail 1

I’ve spent ages testing sauces to make sure they don’t get watery when baked, and I promise, this version is foolproof. I focus my cooking on making sure beginners feel like rockstars in the kitchen, and this cheesy, herby bake is pure proof that simple steps lead to huge flavor payoffs.

Why This Creamy Pesto Chicken and Broccoli Pasta Bake Works for You

This recipe is truly built for the busy home cook. It hits all the right notes without demanding hours of your evening. You get tender chicken, perfectly cooked pasta, and loads of bright green broccoli swimming in a rich sauce. It’s the perfect weeknight savior.

  • It comes together in under an hour, total!
  • The pesto base means you don’t have to make a complicated white sauce from scratch.
  • It reheats like a dream, perfect for lunch the next day.
  • It freezes beautifully if you want to double the batch.

Essential Ingredients for Your Creamy Pesto Chicken and Broccoli Pasta Bake

Gathering your ingredients is half the battle, and with this recipe, precision matters, especially when we start dividing things up for layering. Don’t substitute the heavy cream unless you have to—it’s what keeps that sauce luxurious and prevents it from separating when it bakes.

Make sure you have everything measured out before you start cooking the chicken. It moves fast once you get going!

  • 1 pound penne pasta
  • 2 tablespoons olive oil
  • 1\u00bd pounds boneless, skinless chicken breasts, cut into 1-inch pieces
  • 1 teaspoon salt
  • \u00bd teaspoon black pepper
  • 1 medium yellow onion, diced
  • 4 cloves garlic, minced
  • 4 cups broccoli florets, cut into bite-sized pieces
  • \u2153 cup prepared basil pesto
  • 1\u00bd cups heavy cream
  • 1 cup whole milk
  • 1 cup grated Parmesan cheese, divided (we use \u00be cup in the sauce, \u00bc cup for topping)
  • 1\u00bd cups shredded mozzarella cheese, divided (use 1 cup for the sauce, \u00bd cup for topping)
  • \u00bd teaspoon red pepper flakes
  • \u00bd cup Italian breadcrumbs
  • 2 tablespoons melted butter
  • Fresh basil leaves for garnish

Ingredient Clarity and Preparation Guidance

A little prep work goes a long way here. For the chicken, aim for uniform 1-inch chunks so they cook evenly while you’re searing them in the skillet. Don’t skip seasoning the chicken separately with salt and pepper before it hits the hot oil—that creates flavor layers!

When you chop your broccoli, keep those florets bite-sized; tiny pieces turn to mush too fast. And remember the cheese! You need to keep your Parmesan and mozzarella separate because they play two different roles: one melts into the creamy sauce, and the other forms that glorious, golden crust on top.

Preparing Your Creamy Pesto Chicken and Broccoli Pasta Bake Step-by-Step

Okay, let’s get cooking! The biggest secret to making this Creamy Pesto Chicken and Broccoli Pasta Bake perfect is timing. We want everything cooked just enough so it finishes perfectly in the oven without getting dry or mushy. First things first: preheat that oven to 375\u00b0F and get your 9×13 baking dish greased up. Don’t wait until the end to do this!

We are going to start with the pasta, because that’s the component that takes the longest, but we are intentionally undercooking it. Boil your water, salt it heavily—it should taste like the sea!—and drop in the penne. Cook it for about 8 minutes, aiming for 2 minutes less than the package says for al dente. This is crucial! If you cook it fully now, it turns to sludge after baking. As soon as it’s done, scoop out a full cup of that starchy pasta water before you drain the rest. That water is liquid gold for fixing your sauce later!

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Cooking the Components

Next up, the chicken. Grab a large oven-safe skillet—I love using my Dutch oven for this because I can cook and build the sauce all in one pot, saving on dishes! Heat your olive oil over medium-high heat. Season those 1-inch chicken pieces generously with salt and pepper. You want a nice sear on them, so don’t crowd the pan. Cook them for about 5 to 6 minutes total, turning them until they are golden brown and hit that safe 165\u00b0F internal temperature. Once they’re done, pull them out and set them aside on a clean plate.

Building the Creamy Pesto Sauce Base

Now, use the same skillet—all those chicken bits add flavor! Toss in your diced onion and let it soften up for about 3 or 4 minutes. Then, clear a little space in the center and add your minced garlic and those red pepper flakes. Stir them around for just one minute until you can really smell that garlic—but don’t let it burn! After that, toss in your bright green broccoli florets. We only want them crisp-tender here, so cook them for just 3 or 4 minutes. You want them to hold their shape.

Time for the magic! Pour in the heavy cream and the whole milk. Stir that up, and then whisk in your basil pesto until everything is beautifully green and smooth. Reduce the heat to medium-low. Now, add in most of your Parmesan (about \u00be cup) and 1 cup of your mozzarella. Stir constantly until those cheeses melt right into the sauce—it should look incredibly rich. If the sauce seems too thick at this point, drizzle in a little bit of that reserved pasta water until it coats the back of a spoon nicely.

Combining and Topping the Creamy Pesto Chicken and Broccoli Pasta Bake

Finally, bring all those cooked components back together! Add the slightly undercooked pasta and the cooked chicken back into the skillet. Toss everything gently so every piece of pasta gets coated in that amazing, herbaceous sauce. If you used a regular skillet, scrape this whole mixture into your prepared baking dish now. Spread it out evenly.

Time for the best part: the topping! Sprinkle the rest of your Parmesan (\u00bc cup) and the remaining mozzarella (\u00bd cup) all over the top. For that perfect, crunchy finish that makes a Creamy Pesto Chicken and Broccoli Pasta Bake truly special, mix your Italian breadcrumbs with the melted butter and sprinkle that right over the cheese layer. Pop it into the 375\u00b0F oven for about 20 to 25 minutes. You’re looking for bubbly cheese and a deep golden-brown crust on top. Trust me, the smell alone will make your whole house feel cozier!

Creamy Pesto Chicken and Broccoli Pasta Bake - detail 2

Tips for a Perfect Creamy Pesto Chicken and Broccoli Pasta Bake

Getting this Creamy Pesto Chicken and Broccoli Pasta Bake just right is all about those little details I learned through trial and error. The biggest mistake people make is skipping the rest time! When you pull that bubbly dish out of the oven, you have to let it sit on the counter for a solid 5 minutes. This allows the sauce to thicken up properly. If you cut into it right away, it runs everywhere, and you lose that beautiful, thick texture we worked so hard to achieve.

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Remember that starchy pasta water? Don’t be shy with it! If your sauce seems too thick when you’re mixing everything together, add that reserved water a splash at a time. It’s full of starch, which helps the sauce cling perfectly to the pasta and keeps the whole bake from drying out during the final baking stage. It’s the secret sauce stabilizer!

Ingredient Substitutions and Variations

While this recipe is fantastic as written, it’s super flexible. If you’re out of penne, feel free to use rotini, shells, or even farfalle; just make sure you watch the cooking time since shapes vary!

For an extra veggie boost, you can absolutely toss in a couple of handfuls of fresh spinach when you add the broccoli. It wilts down to nothing but adds great color and nutrients. Also, if you prefer a richer flavor profile, swap out the Italian breadcrumbs for panko breadcrumbs; they give a slightly lighter, crispier crunch on top. Just remember to mix them with the melted butter just like the recipe calls for!

Answering Common Questions About Your Pasta Bake

I get so many messages about this dish, and honestly, it’s because people want to make sure their Creamy Pesto Chicken and Broccoli Pasta Bake turns out just as cheesy and perfect as the first time. Here are the top things people ask me about making this recipe a regular in their rotation.

How do I keep the sauce from getting too thick once I add the pasta? That’s where that reserved pasta water comes in! You add it splash by splash until the sauce is actually slightly looser than you want it to be before you put it in the dish. The pasta soaks up liquid while it bakes, so if the sauce is perfect now, it’ll be dry later. Easy fix!

Can I make this ahead of time? Absolutely! You can assemble the whole thing—mixing everything, putting it in the dish, and topping it—but cover it tightly and refrigerate it for up to 24 hours. Just add about 10 extra minutes to the baking time if you’re baking it straight from the fridge.

What if I don’t have fresh basil pesto? Don’t panic! You can use jarred pesto, of course, but make sure it’s a good quality one. If you’re using a pre-made jar, taste it first; sometimes they are saltier than homemade, so you might need to cut back a tiny bit on the salt you add to the chicken.

Is this Creamy Pesto Chicken and Broccoli Pasta Bake good frozen? Yes, it freezes well! Just make sure you cool the baked dish completely first, cover it really well with plastic wrap and then foil, and freeze for up to three months. It’s the perfect backup dinner!

Storage and Reheating Instructions for Leftovers

Storing leftovers is key to enjoying this dish all week long. Because it’s so rich, you want to treat it gently when reheating so it doesn’t separate or dry out. Always use an airtight container.

Storage/Reheat Method Instructions
Refrigeration Store covered in the fridge for up to 4 days.
Freezing Freeze cooled leftovers tightly wrapped for up to 3 months.
Oven Reheat Bake at 350\u00b0F, covered with foil, for 15-20 minutes.
Stovetop Help Add a splash of milk or extra cream when reheating to restore that signature creaminess.

Estimating the Nutrition of This Dish

I always tell people that tracking macros isn’t the main goal when you’re making comfort food like this Creamy Pesto Chicken and Broccoli Pasta Bake, but it’s good to have a general idea! Since ingredients like pesto and cheese can vary wildly depending on what brand you grab, these numbers are just an estimate based on standard serving sizes. Think of this as a ballpark figure for your planning!

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Estimated Nutritional Breakdown

Nutrient Amount Per Serving
Calories 620
Fat 32g
Carbohydrates 48g
Protein 35g

Share Your Creamy Pesto Chicken and Broccoli Pasta Bake Success

Now that you’ve made this incredible dish, I truly want to hear about it! Did it save your weeknight? Did your family devour it? Don’t be shy—drop a rating below or leave me a comment telling me how your Creamy Pesto Chicken and Broccoli Pasta Bake turned out. Seeing your successes is the best part of sharing these recipes! Follow along for more great ideas.

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Creamy Pesto Chicken and Broccoli Pasta Bake

Amazing 1-Hour Creamy Pesto Chicken Pasta Bake


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  • Author: Adam Harris
  • Total Time: 50 minutes
  • Yield: 8 servings
  • Diet: Omnivore

Description

This creamy pesto chicken and broccoli pasta bake combines tender chicken, fresh broccoli, and pasta in a rich pesto sauce, topped with melted cheese and baked until golden brown. It is an ideal comfort food for busy weeknights.


Ingredients

  • 1 pound penne pasta
  • 2 tablespoons olive oil
  • pounds boneless, skinless chicken breasts, cut into 1-inch pieces
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 1 medium yellow onion, diced
  • 4 cloves garlic, minced
  • 4 cups broccoli florets, cut into bite-sized pieces
  • ⅓ cup prepared basil pesto
  • 1½ cups heavy cream
  • 1 cup whole milk
  • 1 cup grated Parmesan cheese, divided
  • 1½ cups shredded mozzarella cheese, divided
  • ½ teaspoon red pepper flakes
  • ½ cup Italian breadcrumbs
  • 2 tablespoons melted butter
  • Fresh basil leaves for garnish


Instructions

  1. Preheat oven to 375°F and lightly grease a 9×13-inch baking dish.
  2. Cook pasta in salted boiling water until 2 minutes less than al dente, about 8 minutes. Reserve 1 cup pasta water, then drain and set aside.
  3. Heat olive oil in a large oven-safe skillet or Dutch oven over medium-high heat. Season chicken pieces with salt and pepper, then cook for 5-6 minutes until golden brown and cooked through to an internal temperature of 165°F.
  4. Add diced onion to the skillet and sauté for 3-4 minutes until softened. Stir in minced garlic and red pepper flakes, cooking for 1 minute until fragrant.
  5. Add broccoli florets to the skillet and cook for 3-4 minutes until bright green and crisp-tender. Pour in heavy cream, milk, and pesto, stirring to combine.
  6. Reduce heat to medium-low and stir in ¾ cup Parmesan cheese and 1 cup mozzarella cheese until melted and smooth. Add the cooked pasta and toss to coat, adding reserved pasta water if needed to thin the sauce.
  7. Transfer mixture to the prepared baking dish if not using an oven-safe skillet. Top with remaining Parmesan and mozzarella cheese.
  8. Mix breadcrumbs with melted butter and sprinkle over the top. Bake for 20-25 minutes until the cheese is melted, bubbly, and golden brown on top.
  9. Let stand for 5 minutes before serving, then garnish with fresh basil leaves.

Notes

  • Undercook the pasta slightly since it will continue cooking in the oven to prevent mushy noodles.
  • Cut chicken and broccoli into uniform bite-sized pieces for even cooking.
  • Reserve pasta water; the starchy liquid helps thin the sauce and makes it cling to the pasta.
  • Let the baked pasta rest for 5 minutes after removing from the oven so the sauce thickens.
  • Toast the breadcrumb topping under the broiler for the last 2 minutes for extra crunch.
  • Store leftovers in an airtight container in the refrigerator for up to 4 days.
  • Reheat in the oven at 350°F covered with foil for 15-20 minutes. Add a splash of milk or cream when reheating to restore creaminess.
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Main Dish
  • Method: Bake
  • Cuisine: American

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