Blackened Shrimp Recipe: Cajun-Style Pan-Seared Shrimp

Make this keto-friendly Blackened Shrimp for a quick and easy low-carb dinner recipe that’s packed with classic Cajun flavor.

Summertime is perfect for seafood — light, refreshing, and versatile. Louisiana, especially the Gulf Coast, is famous for fresh seafood like shrimp, and its regional herbs and spices elevate simple dishes into bold, memorable meals.

This Blackened Shrimp is a streamlined take on the New Orleans classic. The shrimp are heavily seasoned, seared quickly in a very hot pan to create a dark, flavorful crust, and served as a gluten-free, keto-friendly protein. They can be enjoyed in tacos, salads, grain bowls, or over low-carb pasta for a satisfying, low-calorie meal.

What is Blackened Shrimp?

Blackening is a Cajun cooking technique that relies on a blend of dried herbs and spices. Seafood is coated with the spice mix and cooked in a very hot pan or on the grill, producing a deeply browned, savory crust with a hint of smokiness.

Although the crust may look charred, that dark color signals concentrated, complex flavor rather than burning.

Homemade Blackening Seasoning

This low-carb blackening seasoning is quick to make and full of classic Cajun notes. The blend includes:

• Garlic powder
• Onion powder
• Thyme
• Oregano
• Paprika or smoked paprika
• Chili powder
• Cayenne pepper

To keep the mix sugar-free but with a touch of sweetness, this recipe uses a small amount of a brown low-carb sweetener. The combined spices give the shrimp a deeper, layered flavor that transforms an ordinary weeknight protein.

How to make Blackened Shrimp

This recipe is fast and straightforward: mix the spice blend, toss the shrimp with oil and spices, then sear in a hot skillet. Shrimp cook quickly — about 3 minutes per side — and are done when opaque and curled into a “C” shape.

What Kind of Pan is Best for Blackening?

A cast-iron skillet is ideal because it holds very high, even heat necessary to char the spices and form the signature crust. If using cast iron, heat it thoroughly before adding the shrimp.

What Kind of Shrimp is Best?

Choose raw, cleaned, deveined shrimp. Frozen shrimp are fine if fully thawed and patted dry — dry shrimp sear and develop better texture than damp, frozen ones. Larger shrimp offer more satisfying texture and flavor than smaller varieties.

Which Cooking Fat is Best for Blackening Seafood?

Traditionally, butter is used for blackening because milk solids promote deeper browning and smoky notes in a hot skillet. For a dairy-free option, use olive oil. Oil yields a slightly lighter crust but is equally tasty and keeps the dish keto-friendly.

What to Serve With Blackened Shrimp

Blackened shrimp make excellent tacos when paired with grain-free keto tortillas and a squeeze of lime. They also work well over zoodles, mixed into a salad with baby spinach and avocado, or tossed with low-carb pasta and a creamy sauce.

Other serving ideas:

• Zoodles tossed with warm shrimp for a light, keto-friendly dinner.
• Blackened shrimp salad with arugula, avocado, and a simple dressing.
• Blackened shrimp alfredo with low-carb pasta and a keto alfredo sauce.