This creamy garlic butter steak pasta is the 30-minute dinner that tastes like a steakhouse date night at home. Juicy seared steak bites, shell pasta that catches every drop of sauce, and a rich Cajun garlic parmesan cream sauce that clings to every piece. It is exactly what is in the photo: tender steak, big pasta shells, melty cheese on top, and fresh parsley for a bright finish. One pan for the sauce, one pot for the pasta, dinner on the table fast.
Why This Steak Pasta Works
The secret is searing the steak first, then building the cream sauce right in those steak drippings. That fond is pure flavor. The pasta shells, conchiglioni, are perfect because the ridges and the hollow center trap the creamy sauce inside.
We use a sirloin or ribeye cut into bite-size pieces, so it cooks in 3 minutes and stays tender. The sauce is heavy cream, garlic, parmesan, and a little Cajun seasoning for warmth, not heat. It is rich, silky, and coats the pasta without being gluey.
This is a weeknight recipe that feels like a restaurant plate.
Ingredients for 4 Servings
For the Steak:
• 1.5 lb sirloin steak or ribeye, cut into 1-inch bites
• 1 tablespoon olive oil
• 1 tablespoon Cajun seasoning
• 1 teaspoon smoked paprika
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt
• 1 tablespoon unsalted butter
For the Pasta and Cream Sauce:
• 12 oz medium pasta shells, conchiglioni rigati
• 2 tablespoons unsalted butter
• 4 cloves garlic, minced
• 1 small shallot, finely diced, optional
• 1/2 teaspoon red pepper flakes, optional
• 1 1/2 cups heavy cream
• 1/2 cup beef broth or pasta water
• 1 cup freshly grated Parmesan cheese
• 1 cup shredded mozzarella or provolone cheese, divided
• 1 teaspoon Italian seasoning
• Salt and black pepper, to taste
For Finishing:
• 2 tablespoons fresh parsley, chopped
• Extra parmesan, for serving
Step-by-Step Instructions
1. Cook the Pasta
Bring a large pot of salted water to a boil. Cook the pasta shells 1 minute less than package al dente. They will finish in the sauce. Reserve 1 cup of pasta water before draining. Drain and set aside.
2. Season and Sear the Steak
Pat steak bites completely dry with paper towels. Dry steak sears, wet steak steams. Toss in a bowl with olive oil, Cajun seasoning, smoked paprika, salt, and pepper.
Heat a large heavy skillet over medium-high heat until hot. Add the steak in a single layer, do not crowd the pan, work in batches if needed. Sear 2 minutes per side until browned with a good crust. Add 1 tablespoon butter in the last 30 seconds and toss to coat.
Transfer steak to a plate. It will be medium to medium-rare inside. It finishes cooking in the sauce later, so do not overcook now.
3. Make the Garlic Parmesan Cream Sauce
Reduce heat to medium. In the same skillet with all those steak drippings, melt 2 tablespoons butter. Add shallot and cook 2 minutes until soft. Add minced garlic and red pepper flakes, cook 30 seconds until fragrant.
Pour in the heavy cream and beef broth. Scrape up all the browned bits from the bottom of the pan with a wooden spoon. That is your flavor base. Simmer gently for 3 to 4 minutes until slightly thickened.
Lower heat to low. Stir in Parmesan cheese a handful at a time until melted and smooth. Add Italian seasoning, salt, and pepper to taste. If the sauce is too thick, add a splash of reserved pasta water.
4. Bring It All Together
Add the cooked pasta shells to the sauce. Toss to coat, letting the sauce get inside the shells. Add the steak bites and any resting juices back to the pan. Toss gently for 1 to 2 minutes until everything is glossy and hot. The steak will finish to medium.
Sprinkle 1/2 cup mozzarella over the top. Cover for 1 minute to melt, or broil 1 minute for a golden cheesy top like in the photo.
5. Serve
Remove from heat. Sprinkle generously with fresh chopped parsley. Serve immediately with extra parmesan and cracked black pepper. The sauce thickens as it sits, so serve right away for the creamiest result.
Pro Tips for Perfect Steak Pasta
Use a Hot Pan for the Steak: A screaming hot skillet gives you that dark crust you see in the photo. If the pan is not hot enough, the steak will gray and toughen. Let it sear undisturbed, flip once.
Don’t Overcook the Steak: Steak bites cook fast. Medium-rare to medium is perfect here, about 4 minutes total. It will carry over cook in the hot sauce. Well-done steak bites turn chewy.
Grate Your Own Parmesan: Pre-shredded cheese has anti-caking powder that makes cream sauces grainy. Freshly grated parmesan melts silky smooth.
Salt Your Pasta Water: It should taste like the sea. This is the only chance to season the pasta itself.
Reserve Pasta Water: The starch in pasta water is liquid gold for loosening a thick cream sauce without thinning the flavor. Beef broth adds extra steakhouse depth.
Variations
Spicy Cajun Steak Pasta: Increase Cajun seasoning to 2 tablespoons, add 1 diced bell pepper with the shallot, use pepper jack cheese instead of mozzarella.
Mushroom Steak Pasta: Sauté 8 oz sliced cremini mushrooms after the steak, before the garlic. Deglaze with a splash of Worcestershire sauce.
Garlic Butter Steak Bites and Shells: Skip the Cajun seasoning. Use 2 teaspoons garlic powder, 1 teaspoon onion powder, salt and pepper on the steak. Simple and kid-friendly.
Lighter Version: Use half-and-half instead of heavy cream and reduce cheese by 1/3. The sauce will be thinner but still good. Add 1 teaspoon cornstarch slurry if you need it thicker.
Different Pasta: No shells? Rigatoni, penne, or cavatappi all work great. Anything with ridges that holds sauce.
Storage and Reheating
Fridge: Store leftovers in an airtight container for up to 3 days.
Reheat: Warm gently in a skillet over low heat with a splash of cream or milk to loosen the sauce. Microwave works too, 60 seconds, stir, 30 seconds more. Do not overheat or the steak will toughen.
Freezer: Not recommended. Cream sauces split when thawed and steak bites get rubbery.
This pasta is best fresh, which is easy since it takes 30 minutes start to finish.
What to Serve With Creamy Steak Pasta
This is a rich, complete meal on its own. If you want sides, keep them light and crisp: a simple arugula lemon salad, roasted asparagus, garlic bread, or sautéed green beans. A glass of red wine or iced tea rounds it out.
Frequently Asked Questions
What is the best steak cut for pasta?
Sirloin is lean, affordable, and tender when not overcooked. Ribeye is richer and more marbled, with the best flavor. New York strip also works. Avoid stew meat, it needs slow cooking.
How do I keep the cream sauce from breaking?
Keep the heat low when adding cheese, and add cheese gradually while stirring. Never boil heavy cream hard after cheese is in. If it separates, whisk in 2 tablespoons cold cream off the heat.
Can I make this without heavy cream?
Yes, use half-and-half with 1 teaspoon cornstarch whisked in, or evaporated milk. The sauce will be lighter but still creamy.
Is this very spicy?
No. Cajun seasoning gives smoky warmth, not real heat. The red pepper flakes add a tiny kick. Leave them out for a mild version, or add extra for spicy.
Can I meal prep this?
Cook the steak and sauce separately, store them apart from the pasta. Combine and reheat gently when ready to eat. This keeps the steak tender and the pasta from soaking up all the sauce.
This creamy garlic butter steak pasta shells recipe is rich, comforting, and fast enough for a Tuesday but good enough for company. Juicy steak, cheesy Cajun cream, pasta that holds all that sauce inside. Make it once and it goes straight into your regular rotation.