Homemade Jalapeño Popper Chicken Casserole

Here is my favorite jalapeño popper chicken casserole recipe, with a creamy cheese sauce, tender pasta, shredded chicken, crispy bacon, and just the right amount of jalapeños for a little kick.

This casserole is what I make when I want all the flavors of jalapeño poppers but in an easy dinner form. My family asks for it at least once a month, and there are never any leftovers. It’s comfort food with a spicy twist that everyone seems to love.

What Kind of Jalapeño Peppers Should I Use?

Fresh jalapeños are your best bet for this casserole since they give you the most control over the heat level and add a nice crisp texture to the dish. You can find them in pretty much any grocery store year-round, and they’re usually sitting right next to the bell peppers in the produce section. If you’re sensitive to spice, make sure to remove all the seeds and white membranes inside – that’s where most of the heat lives. On the flip side, if you like things spicy, leave some of those seeds in or even add an extra pepper to the mix. Jarred jalapeños will work in a pinch, but they tend to be softer and a bit more vinegary, which can change the overall flavor of your casserole.

Options for Substitutions

This casserole is pretty forgiving when it comes to swaps, so here are some options if you need them:

• Farfalle pasta: Any short pasta works great here – try penne, rigatoni, shells, or rotini. They all hold onto that creamy sauce nicely.
• Monterey Jack cheese: You can use all cheddar if that’s what you have, or try pepper jack for extra kick. Colby jack is another good option that melts smoothly.
• Bacon: Turkey bacon works if you prefer it, or you can skip the bacon entirely and add some extra jalapeños for flavor.
• Jalapeño peppers: For less heat, use poblano peppers instead. For more spice, leave some seeds in the jalapeños or add a diced serrano pepper.
• Chicken broth: Vegetable broth works just fine, or you can use water with a chicken bouillon cube dissolved in it.
• Cooked chicken: Rotisserie chicken is a time-saver, but you can also use leftover turkey, or even skip the meat for a vegetarian version – just add more veggies like bell peppers or mushrooms.
• Milk: Whole milk gives the best creaminess, but 2% works too. You can also use half-and-half for an extra rich sauce.

Watch Out for These Mistakes While Baking

The biggest mistake when making this casserole is overcooking your pasta – since it bakes in the oven, you want to undercook it by about 2 minutes so it stays firm and doesn’t turn mushy in the final dish. Another common error is not fully softening the cream cheese before adding it to the sauce, which leads to lumps that are hard to stir out, so let it sit at room temperature for at least 30 minutes or microwave it for 15-20 seconds. When making the roux with butter and flour, cook it for the full 1-2 minutes while stirring constantly to get rid of that raw flour taste, but don’t let it brown or your sauce will have an off flavor. Finally, skipping the resting time after baking is tempting when you’re hungry, but those 5-10 minutes allow the sauce to thicken up properly and make serving way easier without everything sliding around on the plate.

What to Serve With Jalapeño Popper Chicken Casserole?

This casserole is pretty hearty on its own since it’s loaded with pasta, chicken, and cheese, but I love serving it with a simple side salad to balance out all that creamy goodness. A crisp romaine or iceberg lettuce salad with ranch dressing and some cherry tomatoes works perfectly, or you could go with a Mexican-style salad with corn, black beans, and a lime vinaigrette. Garlic bread or warm flour tortillas are also great for anyone who wants something to scoop up extra bites. If you’re feeding a crowd, some tortilla chips and guacamole on the side make it feel like a fun party spread.

Storage Instructions

Store: This casserole keeps really well in the fridge for up to 4 days. Just cover it tightly with foil or transfer it to an airtight container once it’s cooled down. The flavors actually get even better the next day, making it perfect for leftovers throughout the week.

Freeze: You can freeze this casserole for up to 3 months, either before or after baking. If freezing unbaked, assemble everything but hold off on the cheddar topping until you’re ready to bake it. Wrap it really well in plastic wrap and then foil to prevent freezer burn.

Reheat: Warm up individual portions in the microwave for about 2 minutes, or reheat the whole casserole covered with foil in a 350°F oven for 20-25 minutes until heated through. If reheating from frozen, let it thaw in the fridge overnight first for best results.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 3200-3600
• Protein: 140-160 g
• Fat: 150-175 g
• Carbohydrates: 270-310 g

Ingredients

For the cheese sauce:

• 3 tbsp butter
• 3 tbsp flour
• 1 cup chicken broth
• 1.75 cups milk
• 8 oz cream cheese (softened)
• 2 cups Monterey Jack cheese
• 1 tsp salt
• 1/2 tsp garlic powder
• 1/4 tsp smoked paprika

For the filling:

• 16 oz farfalle
• 2.5 cups chicken (cooked and shredded)
• 8 slices bacon (cooked and crumbled)
• 4 jalapeños (seeded and diced)

For the topping:

• 1.5 cups cheddar (freshly grated)

Step 1: Prepare the Mise en Place and Preheat

• 8 slices bacon
• 4 jalapeños
• 2.5 cups chicken
• 1.5 cups cheddar

Preheat your oven to 350°F and lightly grease a 9×13 inch baking dish.

While the oven heats, cook the bacon in a skillet over medium-high heat until crispy, then crumble it and set aside.

Dice the jalapeños (remove seeds for less heat if preferred), shred the cooked chicken if not already done, grate the cheddar cheese freshly, and have all remaining ingredients measured and ready.

This preparation ensures smooth cooking once you begin the sauce.

Step 2: Cook the Pasta and Build the Cheese Sauce Base

• 16 oz farfalle
• 3 tbsp butter
• 3 tbsp flour

Bring a large pot of salted water to a boil and cook the farfalle until just firm (al dente), then drain and rinse lightly with cool water to stop cooking.

While the pasta cooks, begin your sauce: melt the butter in a separate saucepan over medium heat, sprinkle in the flour, and whisk constantly for 1-2 minutes to create a roux, which will thicken your sauce.

This timing allows both components to finish around the same time, maximizing efficiency.

Step 3: Create the Creamy Sauce Base

• 1 cup chicken broth
• 1.75 cups milk
• 8 oz cream cheese

Gradually whisk the chicken broth and milk into your roux, stirring constantly to avoid lumps, then increase heat to medium-high and bring to a gentle boil, stirring frequently until the sauce thickens enough to coat the back of a spoon (about 3-5 minutes).

Once thickened, reduce heat to low and add the softened cream cheese in chunks, stirring gently until completely melted and smooth.

I find that keeping the heat low when adding cream cheese prevents it from becoming grainy or separating.

Step 4: Season and Combine All Components

• 2 cups Monterey Jack cheese
• 1 tsp salt
• 1/2 tsp garlic powder
• 1/4 tsp smoked paprika
• cooked pasta from Step 2
• 2.5 cups chicken
• 4 jalapeños
• crumbled bacon from Step 1

Remove the sauce from heat and stir in the Monterey Jack cheese until completely melted and smooth.

Add the salt, garlic powder, and smoked paprika, stirring well to distribute the seasonings evenly.

Now fold in the cooked pasta from Step 2, shredded chicken, diced jalapeños, and most of the crumbled bacon (reserve some for topping), mixing gently but thoroughly to ensure everything is coated with the creamy sauce.

Step 5: Assemble and Bake the Casserole

• casserole mixture from Step 4
• 1.5 cups cheddar
• reserved crumbled bacon from Step 1
• reserved diced jalapeños

Pour the entire mixture into your prepared baking dish and spread evenly.

Top with the freshly grated cheddar cheese, reserving a small handful, and scatter the reserved crumbled bacon and extra diced jalapeños over the top for added flavor and visual appeal.

Cover the dish tightly with foil to retain moisture and prevent the cheese topping from browning too quickly.

Step 6: Bake Covered, Then Finish with Broil

Bake the covered casserole at 350°F for 20 minutes, then remove the foil and bake for an additional 5-10 minutes until the cheese topping is melted and lightly golden.

For extra browning and a slightly crispy cheese top, I like to finish it under the broiler for 1-2 minutes, watching carefully to prevent burning.

Let the casserole rest for 5-10 minutes before serving—this allows the sauce to set slightly and makes it easier to portion.

Homemade Jalapeño Popper Chicken Casserole

Delicious Homemade Jalapeño Popper Chicken Casserole recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 35 minutes mins

Total Time 52 minutes mins

Servings 8 servings

Calories 3400 kcal

Ingredients

  

For the cheese sauce

• 3 tbsp butter
• 3 tbsp flour
• 1 cup chicken broth
• 1.75 cups milk
• 8 oz cream cheese (softened)
• 2 cups Monterey Jack cheese
• 1 tsp salt
• 1/2 tsp garlic powder
• 1/4 tsp smoked paprika

For the filling

• 16 oz farfalle
• 2.5 cups chicken (cooked and shredded)
• 8 slices bacon (cooked and crumbled)
• 4 jalapeños (seeded and diced)

For the topping

• 1.5 cups cheddar (freshly grated)

Instructions

 

• Preheat your oven to 350°F and lightly grease a 9x13 inch baking dish. While the oven heats, cook the bacon in a skillet over medium-high heat until crispy, then crumble it and set aside. Dice the jalapeños (remove seeds for less heat if preferred), shred the cooked chicken if not already done, grate the cheddar cheese freshly, and have all remaining ingredients measured and ready. This preparation ensures smooth cooking once you begin the sauce.
• Bring a large pot of salted water to a boil and cook the farfalle until just firm (al dente), then drain and rinse lightly with cool water to stop cooking. While the pasta cooks, begin your sauce: melt the butter in a separate saucepan over medium heat, sprinkle in the flour, and whisk constantly for 1-2 minutes to create a roux, which will thicken your sauce. This timing allows both components to finish around the same time, maximizing efficiency.
• Gradually whisk the chicken broth and milk into your roux, stirring constantly to avoid lumps, then increase heat to medium-high and bring to a gentle boil, stirring frequently until the sauce thickens enough to coat the back of a spoon (about 3-5 minutes). Once thickened, reduce heat to low and add the softened cream cheese in chunks, stirring gently until completely melted and smooth. I find that keeping the heat low when adding cream cheese prevents it from becoming grainy or separating.
• Remove the sauce from heat and stir in the Monterey Jack cheese until completely melted and smooth. Add the salt, garlic powder, and smoked paprika, stirring well to distribute the seasonings evenly. Now fold in the cooked pasta from Step 2, shredded chicken, diced jalapeños, and most of the crumbled bacon (reserve some for topping), mixing gently but thoroughly to ensure everything is coated with the creamy sauce.
• Pour the entire mixture into your prepared baking dish and spread evenly. Top with the freshly grated cheddar cheese, reserving a small handful, and scatter the reserved crumbled bacon and extra diced jalapeños over the top for added flavor and visual appeal. Cover the dish tightly with foil to retain moisture and prevent the cheese topping from browning too quickly.
• Bake the covered casserole at 350°F for 20 minutes, then remove the foil and bake for an additional 5-10 minutes until the cheese topping is melted and lightly golden. For extra browning and a slightly crispy cheese top, I like to finish it under the broiler for 1-2 minutes, watching carefully to prevent burning. Let the casserole rest for 5-10 minutes before serving—this allows the sauce to set slightly and makes it easier to portion.