Blackened Sirloin

Introduction

Blackened sirloin relies on high heat and a bold spice crust to develop a charred exterior while keeping the interior medium-rare and tender. This method works best on a grill where you can manage two distinct heat zones—a screaming-hot sear followed by gentler cooking to reach the right doneness without overcooking the crust.

Recipe Details

• Prep Time: 35 minutes
• Cook Time: 15 minutes
• Total Time: 50 minutes
• Servings: 2

Ingredients

• 1 top sirloin steak
• 2 tbsp black peppercorns, cracked
• 1 tsp salt
• 1 tbsp Cajun seasoning
• Olive oil

Instructions

1. Brush steak with oil. Season on both sides with seasoning, peppercorns, and salt. Let sit until room temperature, about 30 minutes.
2. Preheat grill to 2 settings: very high, and medium high.
3. Add steak to hottest part and cook 3 minutes per side, rotating 90 degrees halfway through each side to mark.
4. Move steak to medium high heat and cook, turning often, until internal temperature is 5°F (3°C) less than the desired “doneness”.
5. Remove to a plate and cover tightly with aluminum foil. Let rest 10 minutes.
6. Before serving, slice thinly across the grain on a 45 degree angle. Serve warm with Bearnaise sauce.

Variations

Spice intensity: Use 1 tbsp Cajun seasoning for milder heat, or increase to 2 tbsp if you prefer a more aggressive crust and deeper char.

Pan-seared version: If you don’t have a grill, use a cast-iron skillet over high heat. Sear 3 minutes per side on the hottest burner, then finish in a 400°F oven for 5–8 minutes, checking with a meat thermometer.

Herb accent: Add 1 tsp dried thyme or oregano to the seasoning blend for an earthier, less purely Cajun profile.

Finishing oil: Brush the sliced steak with a drizzle of quality olive oil or compound butter just before serving to add richness and shine.

Tips for Success

Room temperature is essential: The 30-minute rest lets the steak cook evenly from edge to center. A cold steak will overcook the outside before the inside reaches rare or medium-rare.

Watch the internal temp, not the clock: A meat thermometer is your best guide. Pull the steak at 5°F below target (125°F for medium-rare, 135°F for medium) because carryover cooking during the 10-minute rest will add another 5°F.

Don’t skip the rest: Resting allows carryover cooking to finish gently and lets juices redistribute. Slice immediately and you’ll lose moisture onto the plate.

90-degree rotation creates crosshatch marks: Rotate the steak halfway through each 3-minute sear on the hot side. This visual mark signals an even, intentional crust, not accidental burning.

Slice against the grain: Cut across the muscle fibers at a 45-degree angle to shorten the fiber length. This makes each bite tender, even if the steak is naturally chewy.

Storage and Reheating

Leftover blackened sirloin keeps in an airtight container in the refrigerator for 3 days. Slice it thinly before storing to speed up reheating.

Reheat gently on a skillet over medium heat, covered with a lid, for 2–3 minutes per side to warm through without drying out. Alternatively, slice and warm in a 300°F oven for 5 minutes on a covered baking sheet.

FAQ

Can I use a different cut of steak?

Yes. Ribeye, New York strip, or flat iron all work well. Choose steaks at least 1 inch thick so the inside stays rare while the crust chars. Thinner cuts risk burning the outside before the center cooks.

What internal temperature should I aim for?

Pull the steak at 125°F for medium-rare or 135°F for medium. After the 10-minute rest, carryover cooking raises the temperature another 5°F, landing you at 130°F or 140°F respectively.

Can I make this without a grill?

Yes, use a cast-iron skillet on high heat for the sear, then move it to a 400°F oven to finish cooking. You’ll lose some of the charred crust texture but retain the blackened seasoning and tender interior.

What do I serve with it?

The recipe calls for Bearnaise sauce, which pairs perfectly. Grilled vegetables, a simple green salad, or roasted potatoes round out the meal without competing for attention.