
This Instant Pot method transforms flat iron steak into a melt-in-your-mouth masterpiece without the long cook times. The pressure cooker locks in juices while breaking down fibers for tender results.
What makes this dish special is the balance of speed and quality. A simple dry rub enhances the beef’s natural flavor, while the pressure cooking ensures even cooking from edge to center.
You’ll achieve restaurant-quality steak with a perfect sear on the outside and juicy tenderness inside. The entire process takes less than an hour, including prep.
Serve sliced against the grain for maximum tenderness. This technique works every time.
Ingredients for Flat Iron Steak Instant Pot
Quality beef and a few pantry staples create this tender, pressure-cooked steak dish.
| Ingredient | Amount | Notes |
|---|---|---|
| Flat Iron Steak 🥩 | 2 lb | Trimmed of excess fat |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Coarse Black Pepper 🌶️ | 1 tsp | Freshly ground for best flavor |
| Garlic Powder 🧄 | 1 tsp | Not garlic salt |
| Smoked Paprika 🌶️ | 1 tsp | Adds depth to dry rub |
| Onion Powder 🧅 | 1 tsp | Complements beef flavor |
| Beef Broth 🥩 | ½ cup | Low-sodium preferred |
| Olive Oil 🫒 | 2 tbsp | Divided for searing and cooking |
| Unsalted Butter 🧈 | 2 tbsp | For basting steak |
| Fresh Rosemary 🌿 | 2 sprigs | Optional for aroma |
| Fresh Thyme 🍃 | 2 sprigs | Optional for aroma |
The flat iron steak is non-negotiable here. Look for well-marbled cuts at your butcher or the meat counter at Whole Foods. The marbling ensures juiciness after pressure cooking. Ask for the steak to be cut about 1.5 inches thick for even cooking. Costco also carries excellent flat iron steaks in their meat section, often at a better price point.
No beef broth? Water with a bouillon cube works in a pinch, but you’ll lose some depth. The dry rub spices can be adjusted to taste—add a pinch of cayenne if you like heat. For the butter, ghee works equally well and has a slightly higher smoke point. If using fresh herbs, tie them with twine for easy removal after cooking.
Cooked steak keeps in the fridge for 3-4 days if stored properly in an airtight container. For longer storage, freeze sliced steak for up to 3 months. Reheat gently to avoid drying out the meat. The dry rub mixture can be made ahead and stored for 1 week in a cool, dark place.
Why You’ll Love This Recipe
- Set It and Forget It: I toss the flat iron steak in the Instant Pot with those spices, press a button, and walk away. No babysitting, no flipping—just perfect results every time.
- Smoky, Savory Bite: That combo of smoked paprika and garlic powder gives the steak a deep, rich flavor that’s way more interesting than plain salt and pepper.
- Weeknight Hero: It’s my go-to for busy evenings when I need something hearty but don’t have time to fuss. (Yes, even on a Tuesday night)
- Leftovers for Days: The steak slices up beautifully for tacos, sandwiches, or salads the next day. Honestly, it tastes just as good reheated.
Step-by-Step Instructions for Flat Iron Steak Instant Pot
Here’s the precise method to achieve tender, flavorful steak with minimal effort.
Step 1: Season and Sear the Steak
Pat the 2 lb Flat Iron Steak dry with paper towels, then season all sides evenly with 1.5 tsp Kosher Salt, 1 tsp Coarse Black Pepper, 1 tsp Garlic Powder, 1 tsp Smoked Paprika, and 1 tsp Onion Powder. I press the spices into the meat to ensure they adhere well.
Set your Instant Pot to the “Sauté” function and add 1 tbsp Olive Oil. Once the oil shimmers, carefully place the steak in the pot. Sear for 3-4 minutes per side until a deep, golden-brown crust forms. This step locks in juices and builds a flavorful fond in the pot.
Step 2: Deglaze and Pressure Cook
Remove the steak and set it aside. Pour in 0.5 cup Beef Broth and use a wooden spoon to scrape up all the browned bits from the bottom of the pot. These bits are packed with flavor and will enrich your cooking liquid.
Return the steak to the Instant Pot along with 2 sprigs Fresh Rosemary and 2 sprigs Fresh Thyme. Secure the lid, set the valve to “Sealing,” and cook on High Pressure for 8 minutes. The 8-minute cook time ensures the steak becomes fork-tender without overcooking.
Step 3: Natural Release and Rest
Allow the pressure to release naturally for 10 minutes, then quick-release any remaining pressure. This natural release period lets the meat relax and reabsorb juices, which is critical for maintaining moisture and tenderness.
Carefully open the lid and transfer the steak to a cutting board. Tent it loosely with foil and let it rest for 5-10 minutes. Resting allows the juices to redistribute throughout the meat, ensuring every slice is juicy and flavorful.
Step 4: Finish with Butter Baste
While the steak rests, set the Instant Pot back to “Sauté” and add the remaining 1 tbsp Olive Oil and 2 tbsp Unsalted Butter. Swirl the pot occasionally until the butter melts and the liquid reduces slightly, creating a rich, glossy sauce.
Slice the steak against the grain into ½-inch thick pieces. Drizzle the butter sauce over the sliced steak before serving. The sauce adds a luxurious finish that complements the steak’s natural juiciness.
Pro Tips For Making Flat Iron Steak Instant Pot
- Sear First, Pressure Later: I learned this the hard way—sear the flat iron steak in the Instant Pot first using the sauté function for 2-3 minutes per side to lock in flavor, then pressure cook for 8-10 minutes for medium-rare.
- Pat It Dry: Sounds weird, but it works: thoroughly pat the steak dry with paper towels before seasoning so the salt and spices stick better and you get a proper crust.
- Skip the Overcrowding: Resist the urge to cut the steak into small pieces before cooking—leave it whole or in large chunks to prevent overcooking and keep it juicy.
- Use Natural Release: After pressure cooking, let the Instant Pot release naturally for 10 minutes before quick-releasing—this prevents the steak from toughening up, especially with a lean cut like flat iron.
Health Benefits of flat iron steak instant pot
Protein Powerhouse
This dish delivers an impressive 40g of protein per 4-oz serving, essential for muscle repair and growth. Beef is a complete protein, containing all nine amino acids your body needs. I find it keeps me full and energized for hours after eating. 💪
Iron Rich Benefits
Flat iron steak is particularly rich in heme iron, which your body absorbs more easily than plant-based iron. A single serving provides about 15% of your daily iron needs, supporting red blood cell production and energy levels.
B Vitamin Boost
You’ll get a significant dose of vitamin B12 and B6 from this recipe. These vitamins are crucial for brain function and metabolism. The niacin in beef also helps maintain healthy skin and nerves.
Zinc for Immunity
Each serving contains about 40% of your daily zinc requirement, a mineral vital for immune function and wound healing. I notice I feel more resilient when I include zinc-rich foods like this regularly in my diet.
Low in Carbs
This steak is naturally carbohydrate-free, making it perfect for low-carb or keto diets. The pressure cooking method preserves all the natural nutrients without adding any unnecessary carbs or sugars. ✨
Heart-Healthy Fats
While often overlooked, beef contains beneficial monounsaturated fats similar to those in olive oil. The flat iron cut is leaner than many other steaks but still provides these heart-healthy fats in moderation.
Nutrition Facts
Frequently Asked Questions
Do I need to marinate the steak first?
No, the dry rub provides plenty of flavor. The 8-minute pressure cook locks in juices while the spices penetrate the meat deeply.
Can I use a different cut of beef?
Flat iron works best, but flank or skirt steak are good alternatives. Avoid lean cuts like sirloin as they may dry out under pressure.
How do I know when it’s done?
The 8-minute cook time plus 10-minute natural release yields medium doneness. Use a meat thermometer for precision: 135°F for medium-rare.
What if my Instant Pot doesn’t have a sauté function?
Sear in a skillet first, then transfer to the pot with broth. The fond from searing adds crucial flavor to the cooking liquid.
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