This Blackened Steak and Shrimp Alfredo is one of those dishes that instantly turns a routine weeknight dinner into something you actually look forward to. I first put this together on a rainy evening when I had a craving for creamy pasta and a handful of pantry spices. The first bite was a revelation: the silky, cheesy sauce, the smoky heat from the blackened seasoning, and the satisfying contrast of tender steak and juicy shrimp. It became an instant favorite in my household, requested whenever guests come over or when we want something a little indulgent without a huge time investment.

There is a lovely balance in this plate — the rich heavy cream and freshly grated Parmesan provide the luxurious mouthfeel you expect from Alfredo, while the blackened seasoning gives the dish a Southern-inspired backbone that keeps it lively. I remember serving this on a chilly Saturday; the house smelled like garlic and butter, and everyone lingered at the table talking long after plates were cleared. It’s special enough for company, but simple enough for a midweek treat.

Ingredients

• Pasta: 8 ounces penne pasta. Penne holds the sauce in its tubes, giving each bite a creamy coating. Look for quality durum wheat pasta for a firmer, al dente bite; Barilla or De Cecco are reliable brands.
• Shrimp: 1 pound large raw shrimp, peeled and deveined with tails removed. Choose fresh or thawed frozen shrimp labeled 16/20 count for balanced texture; avoid pre-seasoned shrimp to control the blackened flavor.
• Steak: 1 pound top sirloin, cut into 1-inch cubes. Sirloin is tender, flavorful, and budget-friendly; buy USDA choice if possible and trim excess fat for cleaner searing.
• Butter: 1/4 cup (1/2 stick) unsalted butter. Unsalted enables precise seasoning control; plug in a tablespoon more if you prefer a richer sauce.
• Sauce aromatics: 1 small yellow onion, diced (about 1/2 cup) and 2 teaspoons minced garlic. Yellow onion becomes sweet when softened and builds a savory depth under the cream.
• Cream and cheese: 2 cups heavy whipping cream and 2 cups freshly grated Parmesan cheese (about 8 ounces). Use freshly grated Parm for better melting and a cleaner, nuttier flavor than pre-grated varieties.
• Blackened seasoning: 1 tablespoon for the sauce plus 1 teaspoon for the shrimp and 1 teaspoon for the steak. A balanced blend of paprika, cayenne, garlic powder, and herbs adds smoky heat — McCormick or homemade will both work.
• Salt and pepper: 1/2 teaspoon kosher salt and 1/2 teaspoon black pepper for the sauce. Adjust to taste, especially if your Parmesan is salty.
• Garnish: Chopped parsley for freshness and color.

Instructions

Cook the Pasta: Bring a large pot of well-salted water to a rolling boil over medium-high heat. Add 8 ounces penne and cook until al dente according to package directions, usually 10–12 minutes. Before draining, reserve 1 cup of the starchy cooking water; this will loosen the sauce if it becomes too thick. Drain the pasta and set aside while you finish the proteins and sauce. Prepare the Shrimp: Pat 1 pound shrimp dry with paper towels and season evenly with 1 teaspoon blackened seasoning. Heat 1 tablespoon vegetable oil in a 13-inch skillet over medium heat until shimmering. Add shrimp in a single layer and cook 1–2 minutes per side until opaque and just cooked through. Avoid overcooking to keep shrimp tender. Transfer to a plate and tent to keep warm. Cook the Steak: Increase the skillet heat to high and add 1/4 cup unsalted butter. When the butter foams, add the steak cubes seasoned with 1 teaspoon blackened seasoning. Sear the cubes 1–2 minutes per side until nicely browned on the outside but still slightly pink inside for medium-rare. Cook longer for medium-well. Transfer to the plate with shrimp and tent to rest; resting helps redistribute juices so the steak remains juicy. Make the Sauce: Reduce heat to medium and add the diced onion to the skillet; cook 3–5 minutes until softened and translucent. Add 2 teaspoons minced garlic and cook another minute until fragrant. Pour in 2 cups heavy whipping cream and stir, scraping up any browned bits from the pan for added flavor. Add 1/4 to 1/2 cup reserved pasta water if needed to temper the heat and help the sauce emulsify. Stir in 2 cups freshly grated Parmesan, 1 tablespoon blackened seasoning, 1/2 teaspoon kosher salt, and 1/2 teaspoon black pepper. Continue stirring until the cheese melts and the sauce thickens slightly. Avoid boiling; a gentle simmer keeps the cream from breaking. Toss and Finish: Add the cooked penne to the skillet and toss to coat thoroughly in the sauce, adding more reserved pasta water 1 tablespoon at a time if you want a looser consistency. Return the steak and shrimp to the pan to warm through for 1 minute. Taste and adjust seasoning. Serve immediately, garnished with chopped parsley for brightness.

Storage Tips

Cool leftovers to room temperature for no more than two hours, then transfer to airtight containers and refrigerate for up to 3 days. For longer storage, freeze in portioned containers for up to 3 months; it’s best to freeze the pasta and proteins together with sauce if you plan to reheat all at once. When reheating from frozen, thaw overnight in the refrigerator and warm gently on the stovetop with a splash of milk or reserved pasta water to revive the sauce. Use glass or BPA-free plastic containers with tight-fitting lids and label with date.

Ingredient Substitutions

To make this lighter, swap half-and-half for heavy cream and reduce butter to 2 tablespoons, but expect a thinner sauce and milder mouthfeel. For a gluten-free version use your favorite gluten-free penne; cook according to package directions and reserve extra pasta water since GF pasta often needs different hydration. If you prefer chicken over steak, use boneless skinless chicken thighs cut into cubes and cook a few minutes longer until internal temperature reaches 165°F. For a dairy-free take, replace cream and butter with full-fat coconut milk and use a dairy-free Parmesan alternative, but know the flavor will shift to something distinctly different.

Serving Suggestions

Serve this with a crisp green salad dressed in a bright vinaigrette to cut the richness — arugula with lemon vinaigrette or a simple mixed greens salad works beautifully. Warm, crusty garlic bread or herbed focaccia are ideal for mopping up sauce. For wine pairings, a medium-bodied Chardonnay balances the creaminess, while a dry Rosé can handle the spice and seafood. Garnish with extra grated Parmesan and a sprinkle of chopped parsley or chives for freshness.

Cultural Background

This dish couples Italian-American comfort — Alfredo’s cream-and-cheese base — with Southern blackening techniques popularized by Cajun and Creole cooks. The blackening method, popularized by chefs like Paul Prudhomme, uses high heat and bold spice blends to form a flavorful crust. Combining surf-and-turf proteins with a creamy pasta is a modern, indulgent twist that highlights the best of both culinary traditions.

Seasonal Adaptations

In summer, add charred cherry tomatoes and a squeeze of lemon to brighten the plate; in winter use roasted mushrooms and a touch of smoked paprika to emphasize smokiness. For holiday gatherings, scale the recipe up and finish with a handful of toasted pine nuts and chopped parsley for festive texture. You can also incorporate seasonal greens like spinach or kale stirred into the hot sauce at the end for added color and nutrients.

Meal Prep Tips

For meal prep, cook pasta slightly under al dente and toss with a teaspoon of oil to prevent sticking before refrigeration. Sear proteins and cool separately on a wire rack before storing to keep crusts intact. Portion into single-serve containers with sauce on the side to maintain texture. Reheat gently and combine just before serving to preserve the fresh sear and sauce creaminess.

Make this Blackened Steak and Shrimp Alfredo your next celebration-worthy dinner. It’s indulgent, approachable, and full of the bold flavors that keep everyone asking for seconds. Enjoy the process as much as the plate — the aroma alone signals something special is on the table.