Glossy Pepper Steak Stir-Fry with Savory Sauce Step-by-step instructions

Before you start

Before heating the pan, complete all prep work because stir-frying moves incredibly fast once the heat is turned on. Slice the flank steak into thin, uniform strips across the grain and set them aside in the refrigerator until ready to cook.

Chop the red and green bell peppers and the yellow onion into even, bite-sized pieces so they cook at the same rate. Whisk the savory stir-fry sauce thoroughly in a small bowl to ensure the starch is fully suspended and ready to pour when the recipe demands it.

Instructions

Searing the Beef

1. 1Prepare the Steak
   Slice the flank steak across the grain into thin strips. Keep the sliced meat in the refrigerator until you are ready to cook to maintain food safety guidelines.
   Look for The meat should be sliced uniformly to ensure even cooking.
   Tip Place the steak in the freezer for fifteen minutes beforehand to make slicing easier.
2. 2Sear the Beef
   Heat a large wok or heavy skillet over high heat until smoking. Add the flank steak strips in a single layer and sear without moving for one minute, then toss and cook until the internal temperature reaches 145°F (63°C). Transfer the steak to a plate and let the meat rest at least 3 minutes.
   Look for Look for a deep, caramelized brown crust on the steak strips.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Sear in batches if your pan is not large enough to avoid crowding.

At the end of this phase, the flank steak strips should have a beautiful, deep brown crust on the outside while remaining tender. The kitchen will fill with the rich, savory aroma of caramelized meat.

Ensure the meat is removed from the pan as soon as it reaches its target temperature to prevent overcooking, allowing it to rest and retain its natural juices.

Stir-Frying the Vegetables

3. 3Stir-Fry the Vegetables
   Toss the sliced green bell pepper, red bell pepper, and yellow onion into the hot pan, stir-frying constantly over high heat for about three minutes.
   Look for The peppers and onions should be bright, glossy, and slightly charred at the edges.
   Tip Keep the vegetables moving continuously so they cook evenly without burning.

The red and green bell peppers, along with the onions, should look vibrant, glossy, and slightly charred at the edges. They must remain crisp-tender, not mushy or soft. The sizzling sound in the pan should be active and sharp, indicating that the moisture is evaporating quickly and the vegetables are searing beautifully.

Saucing and Combining

4. 4Simmer the Sauce
   Pour the savory stir-fry sauce into the pan with the vegetables. Bring the mixture to a rapid boil, stirring constantly as the starch activates and the liquid begins to thicken.
   Look for The sauce will quickly darken and become thick and glossy.
   Tip Give the sauce a quick whisk before pouring to redistribute any settled starch.
5. 5Combine and Coat
   Return the rested flank steak and any accumulated juices to the pan. Toss everything together for one minute until the beef and vegetables are thoroughly coated in the glistening sauce and heated through.
   Look for The stir-fry should be steaming hot and beautifully glazed.
   Tip Serve immediately to enjoy the perfect contrast of textures.

The final dish will display a gorgeous, glossy glaze coating every strip of beef and piece of vegetable. The sauce should be thick enough to cling to the food without pooling excessively at the bottom of the pan. A rich, steam-filled aroma of savory spices and seared beef will rise from the pan, signaling that the stir-fry is ready to serve.

Common mistakes

One common mistake is crowding the pan during the searing process, which lowers the temperature and causes the beef to boil in its own juices rather than sear. Cook the steak in batches if necessary to maintain high heat.

Another error is overcooking the vegetables until they lose their bright colors and crisp texture. Keep the pan moving constantly to ensure even heat distribution and to prevent the delicate onions and peppers from burning or becoming mushy.

How to tell it’s done

The flank steak is perfectly cooked when it reaches an internal temperature of 145°F (63°C) and has rested for at least 3 minutes. This ensures the meat is safe to consume while remaining juicy and tender.

The vegetables are done when they are tender enough to bite through easily but still retain a firm, crunchy core. The sauce is ready when it bubbles, darkens slightly, and thickens to a velvety consistency that coats the back of a spoon.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest