This Blackened Steak and Shrimp Alfredo is my answer to nights when I want something rich, dramatic, and comforting all at once. I first combined these flavors on an anniversary evening when I wanted to treat my family without spending hours in the kitchen. The contrast of peppery, smoky blackened seasoning against a silky cream and parmesan sauce stuck with us — every forkful tastes indulgent but balanced. The steak gives the dish deep, beefy umami while the shrimp adds a sweet briny pop, and the penne carries the sauce perfectly between bites.

I love that this comes together quickly with a single heavy skillet and a pot for pasta: in under an hour you have a restaurant-style plate that’s impressive but repeatable. Texturally it’s a delight — crisp-edged steak cubes, tender shrimp, and a clingy sauce that coats each piece of pasta. The sauce is the star: a simple melt of cream and freshly grated parmesan that becomes glossy and lush without any heavy hands on butter. Serve it to guests or make it on a cozy weekend; it’s a dependable crowd-pleaser.

Ingredients

• Penne Pasta (8 ounces): Choose a good-quality dried penne such as Barilla or De Cecco for reliable al dente texture. Measure by weight if possible — 8 ounces of dry penne yields about 4 generous servings and carries the sauce without getting gummy.
• Shrimp (1 pound): Use large, raw shrimp, peeled and deveined with tails removed for comfort eating. I prefer wild-caught or sustainably farmed options; rinse and pat dry before seasoning so the blackened spice adheres.
• Top Sirloin Steak (1 pound): Cut into 1-inch cubes. Top sirloin gives beefy flavor with good tenderness at a reasonable price. Look for evenly marbled pieces and room-temperature meat for an even sear.
• Blackened Seasoning: This recipe uses a total of 1 tablespoon plus 1 teaspoon distributed between components — you can use a store brand like McCormick or make a blend of paprika, cayenne, garlic powder, onion powder, thyme, oregano, black pepper, and salt.
• Butter (1/4 cup / 1/2 stick): Unsalted butter gives richness for searing the steak and builds flavor in the pan; keep it cold until you’re ready to sear to reduce burning.
• Vegetable Oil (1 tablespoon): For a high smoke point when cooking shrimp; swap for canola if needed.
• Onion & Garlic: 1 small yellow onion, diced, and 2 teaspoons minced garlic create a savory base; sweat until translucent to avoid raw garlic bite in the cream.
• Heavy Whipping Cream (2 cups): Use full-fat heavy cream for body and sheen. Lower-fat creams won’t set as luxuriously and can break under high heat.
• Parmesan Cheese (2 cups, freshly grated): Freshly grate Parmigiano-Reggiano for melt-in-sauce flavor; pre-grated powders contain anti-caking agents and won’t melt as smoothly.
• Seasoning and Garnish: Kosher salt, freshly ground black pepper, and chopped parsley for brightness and color when serving.

Instructions

Cook the Pasta: Bring a large pot of generously salted water to a boil over high heat. Add 8 ounces penne and cook until al dente according to the package directions (usually 9–11 minutes). Before draining, reserve 1 cup of the starchy pasta water — this will loosen and help emulsify the sauce. Drain and set the pasta aside, keeping it warm. Prepare the Shrimp: Pat 1 pound shrimp dry and season evenly with 1 teaspoon blackened seasoning. Heat 1 tablespoon vegetable oil in a 13-inch heavy skillet over medium heat until shimmering. Add shrimp in a single layer and cook 1–2 minutes per side until just opaque and curled; avoid overcooking. Transfer to a plate and tent with foil to keep warm. Cook the Steak: Season 1 pound top sirloin cubes with 1 teaspoon blackened seasoning. Increase skillet heat to high and add 1/4 cup (1/2 stick) unsalted butter; allow it to foam and brown slightly. Add steak cubes, spacing them so they sear rather than steam. Cook 1–2 minutes per side for browned exterior and a pink center (adjust time for desired doneness). Transfer steak to the plate with shrimp and tent. 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 30–60 seconds until fragrant. Pour in 2 cups heavy whipping cream, then whisk in 2 cups freshly grated parmesan, 1 tablespoon blackened seasoning, 1/2 teaspoon kosher salt, and 1/2 teaspoon black pepper. Add 1/4 to 1/2 cup reserved pasta water to reach a silky consistency. Stir continuously until cheese melts and the sauce thickens slightly; do not let it boil vigorously, which can separate the sauce. Toss and Serve: Add the cooked penne to the skillet and toss gently to coat each piece. Adjust sauce texture with more reserved pasta water as needed — a glossy, clingy sauce that lightly coats the pasta is ideal. Return steak and shrimp to the skillet or plate over the pasta. Garnish with chopped parsley and serve immediately while hot.

Storage Tips

Cool leftovers to room temperature for no more than 2 hours, then transfer to airtight containers and refrigerate for up to 3 days. For longer storage, portion into freezer-safe containers and freeze up to 3 months. To reheat, thaw overnight in the refrigerator if frozen. Warm gently in a skillet over low heat with a splash of milk or reserved pasta water to revive the sauce’s creaminess; avoid microwaving on high, which can separate the fats and make the texture grainy. Reheat proteins briefly just to warm through to maintain tenderness.

Ingredient Substitutions

If you need a lighter version, swap half-and-half for heavy cream and reduce butter, though the sauce will be thinner and less glossy. For a gluten-free option, use a certified gluten-free penne and check that your blackened seasoning has no wheat additives. To make this dairy-free, replace cream with a cashew cream and use a dairy-free parmesan alternative — the flavor will shift, but blackened seasoning still provides boldness. For a poultry twist, substitute cubed chicken breast or thigh for the steak; adjust searing times accordingly.

Serving Suggestions

Serve with a simple green salad dressed in lemon vinaigrette to cut through the richness, and a crusty baguette for mopping up sauce. For wine pairings, a medium-bodied Chardonnay or a fruity Zinfandel complements the cream and spice; for beer, try a malty amber ale. Garnish with lemon zest and extra parsley for brightness, and offer crushed red pepper on the side for heat lovers.

Cultural Background

Alfredo-style sauces trace back to early 20th-century Italy but evolved into the creamier, cheese-forward Americanized version we know today. Blackened seasoning originates from Louisiana Creole cooking, popularized in the mid-20th century by chefs who seared heavily spiced proteins in hot pans to develop a charred crust. This dish is a fusion — marrying creamy Italian-American comfort with bold Southern spice for a modern, cross-cultural plate.

Seasonal Adaptations

In summer, add charred cherry tomatoes, spinach, or grilled zucchini to lighten the plate and add color. In winter, finish with roasted mushrooms or caramelized onions for deeper flavor. For holiday entertaining, scale up directly and hold cooked components warm in a low oven, then finish in a large pan with the sauce shortly before serving to keep textures optimal.

Meal Prep Tips

Cook pasta slightly under al dente and cool with a splash of oil before refrigerating to prevent sticking. Store proteins separately from the sauce if you plan to reheat portions for lunches — this preserves texture. When assembling meals for the week, portion pasta and sauce together and add freshly cooked or gently warmed steak and shrimp just before eating to maintain their ideal doneness.

Bring this blackened steak and shrimp Alfredo to your table when you want a memorable meal without overcomplicating the process. The technique is straightforward, the flavors bold yet comforting, and the result always worth the few extra minutes of attention. Serve it with good company and you’ll have a new favorite to revisit.