Blackened Steak and Shrimp Alfredo is the definition of gourmet comfort food. Imagine a shallow white bowl filled with tender penne pasta, generously coated in a thick, creamy, off-white alfredo sauce dotted with specks of black pepper. Resting on top are perfectly grilled, bite-sized cubes of medium-rare sirloin steak with visible char marks, paired with plump, pink blackened shrimp.
Every bite delivers an incredible contrast between the rich, velvety sauce and the bold, smoky spices of the proteins. The vibrant garnish of finely chopped fresh green parsley brings a pop of color to the dish, while the rustic dark wood surface of your dining table sets a cozy and inviting atmosphere.
Whether you are hosting a dinner party or treating yourself to a luxurious weekend meal, this restaurant-quality pasta dish will leave everyone craving seconds. Best of all, it comes together in just 35 minutes using straightforward, professional culinary techniques.
Why You’ll Love This Recipe
- Perfect Textural Contrast: The creamy, off-white alfredo sauce perfectly coats the penne, contrasting beautifully with the smoky crust of the blackened proteins.
- Gourmet Visual Appeal: From the visible char marks on the medium-rare sirloin to the plump, bright pink shrimp, this dish looks like it belongs in a gourmet food magazine.
- Bold Flavor Profile: The fiery kick of blackened spices is flawlessly balanced by the rich, buttery parmesan cream sauce.
- Quick & Approachable: Despite its elegant presentation, the cooking process relies on simple searing and whisking techniques that any home cook can master.
Ingredients & Substitutions
1 lb (450g) Penne Pasta: The ridges and hollow center of penne are perfect for catching the thick alfredo sauce. You can substitute with fettuccine, rigatoni, or your favorite sturdy pasta shape.
1 lb (450g) Sirloin Steak: Cut into bite-sized cubes, sirloin provides the perfect balance of tenderness and robust beef flavor. Strip steak or ribeye also work beautifully for achieving a high-heat char.
1 lb (450g) Large Raw Shrimp: Peeled and deveined, these cook quickly and turn a beautiful plump pink. Ensure they are thoroughly dried with a paper towel before seasoning to achieve a proper sear.
2 tbsp (30g) Blackened Seasoning: A bold blend of paprika, cayenne, garlic powder, and herbs that creates a spicy, savory crust on the proteins. You can adjust the amount based on your personal heat tolerance.
2 tbsp (30ml) Olive Oil: Essential for searing the steak and shrimp at high temperatures without burning. Avocado oil is a fantastic high-smoke-point alternative.
1/2 cup (113g) Unsalted Butter: Forms the rich, flavorful base of our authentic alfredo sauce. Using unsalted butter allows you to control the final sodium level of the highly seasoned dish.
4 cloves Garlic: Freshly minced garlic adds a pungent, aromatic depth that cuts through the rich dairy. Cook it briefly to release its oils without letting it brown.
2 cups (480ml) Heavy Cream: The key to that luxurious, thick, off-white sauce. Avoid half-and-half or milk, as they lack the fat content needed to thicken properly when simmered.
1 1/2 cups (150g) Parmesan Cheese: Freshly grated from the block ensures it melts seamlessly into the cream. Pre-shredded cheeses contain anti-caking agents that can make your sauce grainy.
1 tsp (2g) Black Pepper: Coarsely ground black pepper adds distinct specks and a subtle, earthy bite to the creamy sauce.
2 tbsp (8g) Fresh Green Parsley: Finely chopped for a vibrant, fresh garnish. It adds a pop of color and a mild, clean flavor that brightens the entire bowl.
Equipment Needed
- Large cast-iron skillet (crucial for getting visible char marks on the steak)
- Large pasta pot or Dutch oven
- Whisk (for a perfectly smooth alfredo sauce)
- Tongs (for flipping steak cubes and shrimp)
- Shallow white bowls (for authentic plating)
Step-by-Step Instructions
1. Boil the Penne
Bring a large pot of generously salted water to a rolling boil. Add the 1 lb (450g) of penne pasta and cook according to the package directions until al dente.
Before draining, reserve 1/2 cup (120ml) of the starchy pasta water. Drain the pasta and set it aside.
2. Season the Proteins
Pat the 1 lb (450g) of cubed sirloin steak and 1 lb (450g) of large shrimp completely dry with paper towels. Place them into two separate bowls.
Divide the 2 tbsp (30g) of blackened seasoning evenly between the steak and the shrimp. Toss well until every piece is evenly coated in the dark spices.
3. Sear the Steak Cubes
Heat 1 tbsp (15ml) of olive oil in a large cast-iron skillet over medium-high heat until it begins to shimmer and lightly smoke. Add the steak cubes in a single layer, ensuring they don’t crowd the pan.
Sear for 2-3 minutes per side until visible char marks form and the internal temperature reaches 130°F (54°C) for medium-rare. Remove the steak from the skillet and set aside on a plate.
4. Cook the Shrimp
In the same hot skillet, add the remaining 1 tbsp (15ml) of olive oil. Add the seasoned shrimp in a single layer.
Cook for 1-2 minutes per side until they curl slightly and turn a plump, opaque pink. Immediately remove the shrimp from the skillet to prevent overcooking.
5. Create the Alfredo Base
Reduce the skillet heat to medium-low and melt the 1/2 cup (113g) of unsalted butter, scraping up any blackened bits left from the meat. Add the 4 cloves of minced garlic and sauté for 30 seconds until fragrant.
Slowly whisk in the 2 cups (480ml) of heavy cream. Allow the cream mixture to come to a gentle simmer for 3-4 minutes, whisking occasionally until it begins to reduce.
6. Thicken and Combine
Remove the skillet from the heat and gradually whisk in the 1 1/2 cups (150g) of freshly grated Parmesan cheese and 1 tsp (2g) of coarsely ground black pepper. Continue whisking until you achieve a thick, creamy, off-white sauce with beautiful pepper specks.
Add the cooked penne to the skillet, tossing gently until every noodle is heavily coated. If the sauce is too thick, splash in a little of the reserved pasta water to loosen it.
7. Plate and Garnish
Spoon the creamy pasta into a shallow white bowl. Arrange the charred, medium-rare steak cubes and plump pink shrimp directly on top of the pasta.
Finish by garnishing the entire dish with the 2 tbsp (8g) of finely chopped fresh green parsley. Serve immediately while hot and bubbly.
Expert Tips for Success
- Dry Your Proteins: Moisture is the enemy of a good sear. Thoroughly dry the steak and shrimp before applying the blackened seasoning to ensure you get authentic, visible char marks instead of steaming the meat.
- Grate Your Own Cheese: Pre-shredded parmesan is coated in cellulose to prevent clumping. For a silky, thick, off-white alfredo without any graininess, you must grate a block of high-quality parmesan yourself.
- Manage Pan Heat: Searing requires high heat, but making a cream sauce requires gentle heat. Make sure to lower your burner to medium-low and let the pan cool slightly before adding butter and garlic to avoid burning the base of your sauce.
- Don’t Overcook the Shrimp: Shrimp cook incredibly fast. The moment they turn a plump pink and form a “C” shape, get them out of the hot skillet.
- Save the Pasta Water: The starch in the reserved pasta water acts as a binder. If your alfredo sauce thickens too much as it cools, a splash of this water will perfectly emulsify it back to a creamy state.
Storage & Reheating
Store any leftover Blackened Steak and Shrimp Alfredo in an airtight container in the refrigerator for up to 3 days. Freezing is not recommended, as the heavy cream and parmesan emulsion will break and become grainy when thawed.
To reheat, place the pasta and proteins in a skillet over low heat. Add a splash of heavy cream or milk and toss gently until warmed through. Microwaving is possible but should be done in short 30-second bursts, stirring in between to prevent the sauce from separating.
What to Serve With This
If you love robust flavors, pair this Blackened Steak and Shrimp Alfredo with a fresh marinated cucumber tomato salad or a crisp caprese pasta salad to cut through the richness of the cream sauce. For a larger feast, serve it alongside some incredibly savory garlic parmesan chicken wings or crispy garlic butter potatoes.
If you’re hosting a gathering and want to set up an amazing spread, consider adding bacon jalapeno popper cheese balls as an appetizer to kick things off. For dessert, finish the meal with a decadent honey pistachio baklava cheesecake or a luscious lemon cloud cake recipe.
Still craving more delicious pasta and protein combinations? Be sure to check out our cajun steak pasta and our creamy tuscan shrimp for your next dinner rotation!
Frequently Asked Questions
It is not recommended. Heavy cream has the required fat content to thicken naturally when simmered. Milk or half-and-half will result in a thin, watery sauce that won’t adequately coat the pasta.
Absolutely. While penne is excellent because the ridges and hollow center trap the thick cream sauce, fettuccine, rigatoni, or even bow-tie pasta work wonderfully as substitutes.
Make sure to pat your steak cubes completely dry with a paper towel before seasoning. Use a cast-iron skillet preheated over medium-high heat with a high-smoke-point oil, and avoid crowding the pan.
To prevent grainy alfredo sauce, always grate your parmesan cheese fresh from a block. Pre-shredded cheese contains anti-caking powders that will ruin the silky texture. Also, mix the cheese in off the direct heat.
It reheats reasonably well on the stovetop over low heat. Add a splash of milk or heavy cream to help re-emulsify the sauce. Avoid freezing, as the dairy-based sauce will separate and become unappealing upon thawing.
Recipe Card
The Ultimate Blackened Steak and Shrimp Alfredo
Ingredients
Equipment
Method
- Bring a large pot of salted water to a boil. Add the penne pasta and cook until al dente. Reserve 1/2 cup (120ml) of pasta water before draining. Set the pasta aside.
- Pat the cubed sirloin steak and shrimp completely dry. Toss them in two separate bowls with the blackened seasoning, ensuring an even coating.
- Heat 1 tbsp (15ml) of olive oil in a cast-iron skillet over medium-high heat. Sear the steak cubes for 2-3 minutes per side until char marks form and the internal temperature reaches 130°F (54°C). Remove and set aside.
- Add the remaining 1 tbsp (15ml) of olive oil to the hot skillet. Sear the shrimp for 1-2 minutes per side until plump and pink. Remove immediately to prevent overcooking.
- Lower heat to medium-low. Melt the butter in the skillet, scraping up the blackened bits. Add the minced garlic and sauté for 30 seconds. Whisk in the heavy cream and simmer for 3-4 minutes.
- Remove from heat and gradually whisk in the freshly grated Parmesan cheese and black pepper until the sauce is thick and creamy. Toss the cooked penne into the sauce until coated.
- Serve the pasta in a shallow white bowl. Top with the charred steak cubes and pink shrimp. Garnish with finely chopped fresh green parsley and serve immediately.
Notes
Always grate parmesan cheese from a block for a smooth sauce.
Closing Thoughts & Subscribe
This Blackened Steak and Shrimp Alfredo combines the best of steakhouse dining with the comforting warmth of an Italian kitchen. The textures, the spices, and that thick parmesan cream sauce will make this a permanent fixture in your recipe box.
If you made this dish, we’d love to hear how it turned out! Leave a comment below, and don’t forget to subscribe to our newsletter for more gourmet, easy-to-follow home recipes. Pin the image below to save this recipe for later!
