This is the kind of dinner I make when I want comfort without fuss. It takes the flavors of white chicken enchiladas — tangy, creamy, and a little smoky — and folds them into tender pasta for one-pan baking and easy serving. The result is cheesy, saucy, and reliably crowd-pleasing.

Prep is straightforward: boil pasta, whisk a simple roux-based sauce, stir in chicken and green chiles, top with Monterey Jack, and bake until bubbly. The sauce uses pantry staples and a can of mild green chiles to deliver a bright, savory finish.

Below you’ll find the exact ingredients, a clarified step-by-step method, troubleshooting tips, substitutions for common allergies or diets, and storage suggestions. No fluff — just practical guidance so this becomes a weeknight staple.

What You’ll Need

12-oz penne pasta — the tube shape holds sauce well; cook to al dente.
2 cups chopped cooked chicken — rotisserie or leftover chicken works great for speed.
1 (4-oz) can green chiles — adds mild heat and a tangy, vegetal note.
2 cups shredded Monterey Jack cheese — melts smoothly and gives a mild, creamy finish.
3 Tbsp butter — base for the roux; provides flavor and richness.
3 Tbsp all-purpose flour — thickens the sauce when cooked with butter.
½ tsp onion powder — concentrated savory onion flavor without chopping.
½ tsp garlic powder — quick garlic flavor boost.
1 tsp southwestern seasoning or taco seasoning — brings smoky, earthy spice notes.
2 cups chicken broth — thins and flavors the sauce; use low-sodium if preferred.
1 cup sour cream — adds creaminess and a slight tang to the finished sauce.

Directions: White Chicken Enchilada Pasta

Preheat the oven to 350°F. Lightly spray a 9×13-inch baking pan with cooking spray and set it nearby.
Bring a large pot of salted water to a boil. Cook 12-oz penne pasta according to the package directions until al dente. Drain the pasta and set it aside.
While the pasta cooks, make the sauce: in a small saucepan set over medium heat, melt 3 Tbsp butter. Once melted and bubbling, whisk in 3 Tbsp all-purpose flour and cook, whisking constantly, for about 1 minute to remove the raw flour taste.
Gradually whisk in 2 cups chicken broth, making sure to break up any lumps so the sauce is smooth. Add ½ tsp garlic powder, ½ tsp onion powder, and 1 tsp southwestern seasoning or taco seasoning. Continue whisking until the sauce thickens and becomes smooth, 2–4 minutes.
Remove the saucepan from the heat. Stir in 1 cup sour cream and the contents of the 4-oz can green chiles until evenly combined. Taste and adjust seasoning if needed (a pinch of salt or more seasoning, if desired).
In a large bowl, combine the drained penne, the warm sauce, 2 cups chopped cooked chicken, and half of the 2 cups shredded Monterey Jack cheese (so 1 cup). Toss gently so the pasta and chicken are evenly coated.
Transfer the pasta mixture into the prepared 9×13-inch pan and spread it into an even layer. Sprinkle the remaining 1 cup Monterey Jack cheese evenly over the top.
Bake in the preheated 350°F oven for 25–30 minutes, until the casserole is bubbly and the cheese on top is fully melted. If you like a golden top, broil for 1–2 minutes at the end while watching closely.
Remove from the oven and let rest for 5 minutes before serving. This helps the sauce set slightly and makes it easier to portion.

What Makes This Recipe Special

This dish blends the familiar comfort of baked pasta with the bright, zesty notes of green chiles and southwestern seasoning. The roux-based sauce gives more body than a simple cream sauce, so it clings to the pasta and chicken — no watery casserole here. Using Monterey Jack keeps the flavor mellow and melty, making it friendly for kids and adults alike.

It’s also very adaptable: rotisserie chicken keeps prep fast, and the sauce comes together in one pan while the pasta cooks, so this feels like a made-from-scratch meal with minimal active time.

Allergy-Friendly Substitutes

Dairy-free: Use vegan butter, a gluten-free flour blend, and a dairy-free sour cream. Substitute dairy-free shredded cheese made from plant-based ingredients.
Gluten-free: Replace penne with a gluten-free pasta and swap the all-purpose flour for a 1:1 gluten-free flour blend. Ensure your chicken broth is gluten-free.
Egg allergy (affecting some pastas): Choose an egg-free pasta variety; many penne pastas are egg-free, but check the label.
Low-lactose: Use lactose-free sour cream and cheese, and lactose-free butter options are available.

Gear Up: What to Grab

Large pot for boiling pasta
Small saucepan for the sauce
Whisk for making a smooth roux and sauce
9×13-inch baking pan
Colander to drain pasta
Mixing bowl to combine pasta, sauce, and chicken

Things That Go Wrong

Too-thin sauce: If you don’t cook the roux long enough or you add the broth too quickly, the sauce can be thin. Cook the butter and flour for about a minute, then whisk the broth in gradually until it thickens.

Dry casserole: Overbaking or using pasta that’s too far past al dente can dry the dish. Remove the pasta from boiling when it’s al dente; it will finish cooking in the oven with the sauce. Also, don’t skimp on the sour cream — it keeps the finished casserole creamy.

Curdled sour cream: If the sauce is too hot when you stir in sour cream, it can separate. Remove the pan from heat and let it cool for a few seconds, then stir in the sour cream off the heat.

Dietary Swaps & Alternatives

Make it spicier: Use a hot green chile can or add a pinch of cayenne or chipotle powder to the sauce.
Vegetarian option: Replace chicken with roasted vegetables like poblano, zucchini, and corn, and add an extra cup of cheese or a plant-based protein.
Cheese variation: Swap some Monterey Jack for pepper jack for heat, or mix in a bit of sharp cheddar for more depth.
Richer sauce: For a creamier sauce, fold in a few tablespoons of cream cheese with the sour cream (note: this adds richness and extra tang).

Author’s Commentary

I love this recipe because it’s forgiving and fast. Rotisserie chicken shaves a lot of time off dinner without sacrificing flavor. The green chiles are the quiet hero — they give the dish character without overpowering it. This pasta has become my go-to when friends are coming over or when I want something that feels indulgent but is actually straightforward.

Make it your own: test different cheeses, add a squeeze of lime before serving for brightness, or stir in fresh cilantro if you like herbal lifts. Little tweaks like those personalize the dish without changing the simple, successful backbone of the recipe.

Meal Prep & Storage Notes

To meal-prep: assemble the pasta in the baking pan, cover tightly, and refrigerate up to 24 hours before baking. Add a few extra minutes to the bake time if the dish is cold from the fridge.

Storage: Cool leftovers to room temperature, then store in an airtight container in the refrigerator for up to 3–4 days. Reheat in the oven at 350°F covered with foil until warmed through, or microwave individual portions covered to retain moisture.

Freezing: You can freeze the baked casserole for up to 2 months. Thaw overnight in the fridge and reheat in a 350°F oven until hot. Note that texture of the sauce and cheese may change slightly after freezing.

FAQ

Can I use another pasta shape? Yes. Penne is recommended because it holds sauce well, but rigatoni, shells, or ziti work fine.
Do I need to use a roux? The roux (butter + flour) gives the sauce body and prevents it from being watery. You can skip it if you prefer a thinner, broth-based sauce, but expect a looser texture.
Can I make this on the stovetop and skip baking? Yes. Combine everything in a large skillet, heat gently until bubbly and cheese melts, then serve immediately. It won’t have the baked top, but it will be quicker.
How do I make it less spicy? Use mild southwestern seasoning or reduce the amount to ½ tsp; choose mild green chiles.

Let’s Eat

Serve this White Chicken Enchilada Pasta with a simple side salad or some tortilla chips and guacamole for texture contrast. Add lime wedges and chopped cilantro at the table for brightness. It’s an easy, comforting meal that travels well to potlucks and keeps happily in the fridge for quick weekday lunches.

Enjoy a generous scoop, let the cheese stretch, and don’t forget to grab a napkin. This is dinner that hits the spot without a fuss.

Print Recipe Save it for later