Baked Pesto Chicken Mac & Cheese

My kitchen filled with steam one Thursday evening when I decided to combine two things I'd been craving separately—creamy mac and cheese and the bright, herby flavor of pesto chicken. What started as a spontaneous dinner solution became the dish I now make whenever I need something that feels both comforting and a little bit special. The golden, bubbling top and those fragrant bites of basil-coated chicken turn an ordinary weeknight into something worth talking about.

I made this for my neighbors last month when they mentioned being tired of takeout, and watching their faces light up when they tasted it reminded me why I love cooking for people. That moment when someone realizes comfort food doesn't have to be boring—that's what this casserole does every single time.

Ingredients

• Elbow macaroni, 400 g: Stick with elbow—the shape holds sauce in all the right places, and al dente pasta keeps everything from turning mushy after baking.
• Boneless, skinless chicken breast, 500 g: Cut into bite-sized pieces so they cook quickly and distribute evenly throughout the casserole.
• Olive oil, 2 tbsp for chicken: Use a good quality oil here since you'll taste it directly in the pesto coating.
• Salt, 1/2 tsp and black pepper, 1/4 tsp: Season the chicken before cooking to build flavor layers.
• Dried Italian herbs, 1/2 tsp: This bridges the gap between plain chicken and the pesto that's coming.
• Basil pesto, 100 g: Store-bought saves time and works beautifully, but homemade tastes even better if you have fresh basil on hand.
• Unsalted butter, 3 tbsp: The foundation of your cheese sauce, so don't skip it for margarine.
• All-purpose flour, 3 tbsp: This thickens the milk into a sauce that coats every noodle.
• Whole milk, 700 ml: Full-fat milk creates the creamy texture that makes this dish worth making.
• Shredded mozzarella, 150 g: Melts smoothly and adds mild creaminess.
• Shredded Parmesan, 100 g: Brings sharpness and helps the cheese sauce taste complex.
• Shredded sharp cheddar, 100 g: The bold flavor that makes people ask what you did differently.
• Garlic powder, 1/2 tsp: A quiet background note that deepens the savory profile.
• Panko breadcrumbs, 40 g: These stay crispy on top even after baking, giving you that textural contrast.
• Grated Parmesan for topping, 30 g: Extra cheese on top browns into golden pockets of flavor.
• Olive oil for topping, 1 tbsp: This is what makes the panko topping actually golden instead of pale.

Instructions

Heat your oven and prepare the dish:

Set your oven to 200°C (400°F) and grease a 23x33 cm baking dish with a little butter or oil so nothing sticks to the sides.

Cook the pasta until just shy of done:

Bring salted water to a rolling boil, then add the macaroni and cook it about a minute less than the package says—it'll finish cooking in the oven and you want it tender, not soft. Drain and set aside.

Brown the chicken and coat it with pesto:

While the pasta water heats, warm olive oil in a skillet over medium heat. Add your chicken pieces, season with salt, pepper, and Italian herbs, and let them turn golden, stirring occasionally until cooked through (about 6–8 minutes). This step is where the chicken gets flavor before the pesto joins in, so don't rush it. Remove from heat and immediately toss with the basil pesto so the warmth helps it coat everything evenly.

Make the cheese sauce from scratch:

In a large saucepan, melt butter over medium heat and whisk in the flour, cooking for exactly one minute—this removes the raw flour taste. Slowly pour in milk while whisking constantly to avoid lumps, and keep stirring until you feel the sauce thicken, about 4–5 minutes. You'll know it's ready when it coats the back of a spoon.

Fold in the three cheeses and seasonings:

Remove the pan from heat and stir in mozzarella, Parmesan, cheddar, and garlic powder until completely melted and smooth. Taste it and add salt and pepper to your preference—remember the pasta and chicken are already seasoned, so go easy.

Combine everything with a gentle hand:

In a large bowl, mix the cooked macaroni, cheese sauce, and pesto chicken together with a rubber spatula, turning it over itself several times until evenly coated. Don't stir aggressively or you'll break apart the chicken pieces.

Transfer to the baking dish:

Spoon the entire mixture into your prepared baking dish, spreading it into an even layer.

Make the crispy topping:

In a small bowl, combine panko, grated Parmesan, and olive oil, stirring until the breadcrumbs look moistened. This is important—dry breadcrumbs won't brown properly, so the oil is essential.

Bake until bubbling and golden:

Sprinkle the panko mixture evenly over the casserole and bake for 20–25 minutes until you see bubbling around the edges and the top turns deep golden brown. The longer you bake, the crispier the topping becomes.

Let it rest before serving:

Remove from the oven and let the casserole sit for 5 minutes—this allows the sauce to set slightly so it doesn't slide around on the plate.

Pin to Board

There's something about serving this dish to people you care about and watching them come back for seconds that reminds me why I cook. It's not fancy, but it's thoughtful, and somehow that matters more.

Why Fresh Basil Changes Everything

The first time I made this with fresh basil pesto instead of jarred, I understood why people become obsessed with growing herbs. Fresh basil has this bright, peppery quality that store-bought can't quite capture, and it makes the entire dish taste alive rather than just creamy. If you have even a small pot of basil on a windowsill, spending 10 minutes to blend it with garlic, pine nuts, Parmesan, and olive oil will transform this casserole into something memorable.

The Cheese Combination That Makes It Work

Using three cheeses might seem excessive until you taste how each one plays a role—mozzarella for smoothness, Parmesan for depth, and sharp cheddar for personality. I experimented once using just one cheese to save money, and the dish tasted flat and one-dimensional. This combination costs a few dollars more but creates layers of flavor that keep people coming back to the table.

Make It Yours and Store It Well

The beauty of this casserole is how forgiving it is to customization—stir in sautéed spinach, roasted sun-dried tomatoes, or even caramelized onions, and it becomes a different story every time. Leftovers keep beautifully in the fridge for up to three days and reheat gently in a low oven so the top doesn't burn before the center warms through.

• Swap the chicken for roasted vegetables and use a splash of vegetable broth instead of milk for a vegetarian version that's equally satisfying.
• Make the panko topping the night before and keep it in the fridge; it actually helps it stay crispy during baking.
• Try smoked gouda or fontina in place of the sharp cheddar if you want a smoky twist.

Pin to Board

This is the kind of dish that makes ordinary evenings feel a little more intentional, a little more nourishing. Make it for people you want to slow down with.

Common Questions

→ Can I make this ahead of time?

Yes, assemble the entire casserole up to 24 hours in advance, cover tightly, and refrigerate. Add 5-10 minutes to baking time if baking cold from the refrigerator.

→ Can I freeze leftovers?

Leftovers freeze well for up to 3 months. Portion into airtight containers and thaw overnight in the refrigerator before reheating at 180°C (350°F) until warmed through.

→ What pasta shapes work best?

Elbow macaroni is traditional, but cavatappi, penne, or shells also work beautifully. Choose shapes with plenty of surface area to hold the creamy cheese sauce.

→ Can I use rotisserie chicken?

Absolutely. Shred about 3 cups from a store-bought rotisserie chicken and toss with pesto. Skip the seasoning step and proceed with assembly.

→ How do I know when it's done baking?

The casserole is ready when the cheese sauce bubbles around the edges and the panko topping turns golden brown. Let it rest 5 minutes before serving for the best texture.

→ Can I make this gluten-free?

Use gluten-free macaroni and substitute the flour with a 1:1 gluten-free flour blend. Replace panko with gluten-free breadcrumbs or crushed gluten-free crackers.