Easy J. Alexander’s Rattlesnake Pasta Copycat Recipe

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Copycat J. Alexander’s Rattlesnake Pasta Recipe


Bowl of creamy copycat J. Alexander’s rattlesnake pasta with penne, chicken, red peppers, Parmesan, parsley, and jalapeño slices.
Bring home that rich, cheesy, peppery heat with this copycat J. Alexander’s Rattlesnake Pasta, loaded with tender chicken and a silky sauce.

If you’ve ever had J. Alexander’s Rattlesnake Pasta, you probably remember it right away. It’s rich, creamy, a little spicy, and packed with bold flavor in every bite. The pasta is silky, the sauce clings to every noodle, and the kick from the peppers keeps you coming back for one more forkful.

This copycat rattlesnake pasta recipe brings that restaurant-style comfort food right into your own kitchen. It’s easy enough for a weeknight dinner, but it also feels special enough for guests. If you love creamy Cajun-style pasta recipes with chicken and peppers, this one is going to be a favorite.

About J. Alexander’s and Why Rattlesnake Pasta Is So Popular

J. Alexander’s is known for upscale American comfort food with a polished feel. Their menu has built a strong following because it blends familiar dishes with bold, restaurant-quality flavor. People go there for steaks, sandwiches, and hearty plates that feel both classic and a little indulgent.

Rattlesnake Pasta is one of those dishes that tends to stick in your memory. Despite the name, there’s no rattlesnake in it. The “rattlesnake” part usually points to the spicy bite in the sauce. Think of it like a creamy chicken pasta that woke up and decided to have a little attitude.

This dish is iconic because it hits so many cravings at once:

  • Creamy sauce that feels rich and smooth
  • Tender chicken that adds heartiness
  • Peppers and seasoning for warmth and zip
  • Pasta that makes it cozy and filling
  • Melted cheese that ties it all together

This recipe is inspired by the restaurant favorite and is meant for home cooks who want that same creamy, spicy, comforting feel.

What This Copycat Rattlesnake Pasta Tastes Like

Let’s talk flavor. This pasta is buttery, creamy, cheesy, and gently smoky. The sauce has a soft heat that builds a little as you eat, but it shouldn’t be overwhelming. The chicken stays juicy, the peppers bring color and a mild sharpness, and the Parmesan helps create that savory finish.

If Alfredo sauce and Cajun chicken pasta had a delicious middle ground, this would be it.

You can make it as mild or spicy as you like, which is one of the best things about making a copycat J. Alexander’s Rattlesnake Pasta at home.

Ingredients

Serves: 4 to 6

Prep time: 20 minutes

Cook time: 30 minutes

Total time: About 50 minutes

For the pasta and chicken:

  • 12 ounces penne pasta
  • 1 1/2 pounds boneless, skinless chicken breasts, cut into bite-sized pieces
  • 1 tablespoon olive oil
  • 1 tablespoon butter
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 teaspoon garlic powder
  • 1 teaspoon paprika
  • 1/2 teaspoon onion powder
  • 1/4 to 1/2 teaspoon cayenne pepper, depending on heat preference

For the sauce:

  • 2 tablespoons butter
  • 1 red bell pepper, thinly sliced
  • 1 small onion, thinly sliced
  • 1 to 2 jalapeños, seeded and finely chopped
  • 3 cloves garlic, minced
  • 2 tablespoons all-purpose flour
  • 2 cups half-and-half
  • 1/2 cup chicken broth
  • 1 cup freshly grated Parmesan cheese
  • 1 cup shredded mozzarella cheese
  • 4 ounces cream cheese, softened
  • 1/2 teaspoon crushed red pepper flakes, optional
  • Salt and black pepper, to taste

Optional garnish:

  • Chopped parsley
  • Extra Parmesan cheese
  • Sliced jalapeños

Kitchen Tools You’ll Need

  • Large pot for boiling pasta
  • Large skillet or sauté pan
  • Cutting board
  • Sharp knife
  • Wooden spoon or spatula
  • Whisk
  • Measuring cups and spoons

If you have a large deep skillet, that’s ideal. It makes it easier to toss the pasta directly into the sauce without making a mess.

How to Make Copycat J. Alexander’s Rattlesnake Pasta

Step 1: Boil the pasta

Bring a large pot of water to a boil. Add a generous amount of salt. The water should taste lightly salty, almost like broth. This is your chance to season the pasta itself.

Add the penne and cook it until just al dente according to the package directions. Usually that takes about 10 to 11 minutes. Drain the pasta, but save about 1 cup of the pasta water in case you need to loosen the sauce later.

Step 2: Season the chicken

Place the chicken pieces in a bowl. Toss them with salt, black pepper, garlic powder, paprika, onion powder, and cayenne. Make sure the chicken is evenly coated.

Step 3: Cook the chicken

Heat 1 tablespoon olive oil and 1 tablespoon butter in a large skillet over medium-high heat. Once the pan is hot, add the chicken in a single layer.

Cook for about 4 to 6 minutes, stirring occasionally, until the chicken is lightly browned and cooked through. The safe internal temperature for chicken is 165°F. Use a meat thermometer to check the thickest pieces.

Once cooked, transfer the chicken to a plate and set it aside.

Step 4: Sauté the vegetables

In the same skillet, reduce the heat to medium and add 2 tablespoons butter. Add the sliced onion, bell pepper, and jalapeños. Cook for 4 to 5 minutes, stirring now and then, until the vegetables start to soften.

Add the minced garlic and cook for 30 seconds more. You just want it fragrant. Garlic burns fast, so don’t walk away here.

Step 5: Build the sauce

Sprinkle the flour over the vegetables and stir well. Cook for about 1 minute. This helps remove the raw flour taste and gives the sauce a better texture later.

Slowly pour in the half-and-half while whisking. Then add the chicken broth. Keep whisking until the mixture is smooth.

Let the sauce simmer gently for 2 to 3 minutes until it starts to thicken. Not too fast though. A low, steady simmer is what you want. If it boils hard, dairy sauces can get grainy.

Step 6: Add the cheese

Lower the heat. Stir in the cream cheese first until melted and smooth. Then add the Parmesan and mozzarella a little at a time, stirring until the sauce is creamy.

If you want extra heat, add the crushed red pepper flakes now. Taste the sauce and season with more salt and black pepper if needed.

Step 7: Combine everything

Add the cooked chicken back into the skillet. Then add the drained pasta. Toss everything together until the pasta is fully coated in the sauce.

If the sauce seems too thick, add a splash of the reserved pasta water a little at a time until it reaches the texture you like. It should be creamy and smooth, not stiff or dry.

Step 8: Serve hot

Spoon the pasta into bowls or onto plates. Top with parsley, extra Parmesan, or sliced jalapeños if you like.

Serve it right away while the sauce is hot and velvety.

Tips for the Best Rattlesnake Pasta

  • Don’t overcook the pasta. It will continue to soften a little when mixed into the hot sauce.
  • Use freshly grated cheese if you can. Pre-shredded cheese has anti-caking agents that can make sauces less smooth.
  • Control the heat level. Remove jalapeño seeds for less spice, or leave some in for more kick.
  • Cut chicken into even pieces. That helps it cook at the same rate.
  • Keep the sauce at a gentle simmer. High heat can cause dairy to separate.

Easy Shortcuts and Time-Saving Ideas

Need to get dinner on the table faster? I get it. Some nights call for shortcuts, and that’s okay.

  • Use rotisserie chicken: Skip cooking raw chicken and stir in shredded rotisserie chicken near the end.
  • Use jarred Alfredo sauce: Start with 2 cups of Alfredo sauce and season it with sautéed peppers, jalapeños, Parmesan, and a little broth to create a quicker version.
  • Prep vegetables ahead: Slice your peppers and onions the night before.
  • Make it a baked pasta: Transfer the finished pasta to a casserole dish, top with extra mozzarella, and bake at 375°F for 10 to 15 minutes until bubbly.

If you want a simpler home version, that baked option is especially great for feeding a family.

Allergy-Friendly and Diet Modification Ideas

One thing that makes this recipe stand out is how easy it is to adjust. If someone at your table has a food allergy, sensitivity, or different eating style, you still have options.

Gluten-free:

  • Use your favorite gluten-free penne pasta.
  • Replace the all-purpose flour with a 1:1 gluten-free flour blend or 1 tablespoon cornstarch mixed with 1 tablespoon cold broth.
  • Double-check your chicken broth and cheeses to make sure they are gluten-free.

Dairy-free:

  • Use dairy-free butter.
  • Swap the half-and-half for unsweetened plain oat cream or full-fat coconut milk.
  • Use dairy-free cream cheese and shredded dairy-free mozzarella.
  • Add nutritional yeast for a cheesy flavor boost.
  • Keep in mind the flavor will be a little different, but still creamy and satisfying.

Vegetarian:

  • Skip the chicken and use sliced mushrooms, roasted cauliflower, or plant-based chicken strips.
  • Use vegetable broth instead of chicken broth.

Vegan:

  • Use vegan pasta if needed.
  • Replace chicken with mushrooms, tofu, or chickpeas.
  • Use plant-based butter, dairy-free cream cheese, dairy-free shredded cheese, and unsweetened oat cream.
  • Use vegetable broth.

Low-carb:

  • Swap the pasta for hearts of palm pasta, zucchini noodles, or spaghetti squash.
  • Reduce the onion slightly if you’re watching carbs closely.

Paleo-inspired:

  • Use zucchini noodles or roasted spaghetti squash.
  • Skip the flour and thicken the sauce gently with a reduced coconut cream base.
  • Use compliant seasonings and broth.
  • Note that this becomes more of a creamy spicy chicken skillet than a traditional pasta dish, but the flavor idea still works well.

Milder version for kids or spice-sensitive eaters:

  • Use bell pepper only and leave out jalapeños and cayenne.
  • Serve hot sauce on the side so everyone can adjust their own bowl.

Extra spicy version:

  • Leave some jalapeño seeds in.
  • Add more cayenne or red pepper flakes.
  • Top with pickled jalapeños for another layer of heat.

Approximate Nutrition Per Serving

Based on 6 servings, these are rough estimates:

  • Calories: 640
  • Protein: 39g
  • Carbohydrates: 38g
  • Fat: 36g
  • Fiber: 2g
  • Sugar: 4g
  • Sodium: 780mg

Nutrition will vary depending on the brands you use and how spicy or cheesy you make it.

What to Serve with Rattlesnake Pasta

This dish is rich, so it pairs well with simple sides.

If you want to balance the heat and creaminess, a fresh salad works really well.

Storage and Reheating

To store: Let the pasta cool, then place it in an airtight container. Refrigerate within 2 hours and use within 3 to 4 days.

To reheat: Warm it in a skillet over low heat with a splash of milk or broth. You can also microwave it in short bursts, stirring in between.

Food safety note: Reheat leftovers to 165°F before serving.

This pasta is best fresh, but leftovers are still very tasty the next day.

Final Thoughts

This copycat J. Alexander’s Rattlesnake Pasta recipe is creamy, comforting, slightly spicy, and much easier to make at home than you might think. It has that restaurant-style feel, but it uses simple ingredients and straightforward steps.

Whether you’re making it for a cozy family dinner, a date night at home, or just because you’re craving bold pasta, this recipe checks a lot of boxes.

If you try it, I’d love to hear how it turned out for you. Did you make it extra spicy? Did you use rotisserie chicken or make it gluten-free? Please share and leave a comment so others can see your tips too.

Disclaimer

This is a copycat recipe created for home cooks and is inspired by the flavors of a popular restaurant dish. It is not the actual recipe, and no knowledge of the restaurant’s proprietary recipe is implied. We are not affiliated with, endorsed by, or representing J. Alexander’s in any way.

Simply Copycat Recipes is also an Amazon affiliate. This means we may earn a small commission from qualifying purchases made through links, at no extra cost to you.

Location: Georgetown, IN, USA

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