Skillet Pepper Steak with Savory Brown Sauce Step-by-step instructions

Before you start

Before you begin cooking, it is essential to have all your ingredients prepped and measured next to the stove. Slice the beef strips, cut the red bell peppers and onions, and prepare your savory brown sauce ahead of time.

Because this stir-fry cooks rapidly over high heat, you will not have time to chop or measure ingredients once the pan is hot. Having everything ready ensures a smooth, stress-free cooking process.

Instructions

Searing the Steak Strips

1. 1Heat the Skillet
   Heat a large skillet or wok over high heat until it is extremely hot. Carefully add the beef sirloin strips in a single layer, ensuring they do not overcrowd the pan so they sear properly.
   Look for The pan should be extremely hot and slightly smoking.
   Tip Make sure the pan is extremely hot before adding the meat.
2. 2Sear the Beef
   Sear the beef sirloin strips quickly, tossing them with tongs for about two to three minutes. The goal is to get a deep, golden-brown crust on the outside while keeping the center slightly undercooked.
   Look for A deep brown crust forms on the steak strips.
   Tip Toss constantly with tongs to ensure even browning.

At the end of this phase, the beef strips should have a deep, golden-brown caramelized crust on the outside while remaining slightly undercooked in the center. You will hear a loud, energetic sizzling sound as the meat hits the hot pan, and the kitchen will fill with a rich, savory aroma. The meat should be quickly removed from the skillet to prevent it from overcooking and becoming tough.

Sautéing the Peppers and Onions

3. 3Sauté the Vegetables
   Remove the beef strips from the skillet and set them aside on a plate. Add the sliced red bell peppers and yellow onion to the same skillet, tossing with tongs to pick up the browned bits.
   Look for The vegetables become fragrant and slightly charred on the edges.
   Tip Do not overcook the vegetables; they should remain crisp-tender.

At this point, the red bell peppers and onions should be vibrant in color, slightly charred on the edges, and crisp-tender to the bite. They will have absorbed the flavorful browned bits from the bottom of the skillet, smelling sweet and deeply savory. They should still hold their shape beautifully and must not look soft, limp, or mushy before you proceed to the final step.

Simmering the Sauce and Finishing

4. 4Simmer and Finish
   Return the beef to the skillet. Pour in the savory brown sauce and stir well, letting it bubble violently and thicken as it coats the beef sirloin and vegetables. Ensure the beef reaches a safe internal temperature of 145°F (63°C) and let it rest for at least 3 minutes. Garnish with fresh cilantro before serving.
   Look for The sauce is thick, glossy, and bubbling violently.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Let the meat rest to keep it tender and juicy.

The final checkpoint is reached when the savory brown sauce bubbles violently, thickens, and clings glossily to the tender beef strips and colorful vegetables.

Steam will rise generously from the pan, carrying a rich, mouthwatering aroma. The beef must reach a safe internal temperature of 145°F (63°C) and be allowed to rest for 3 minutes, ensuring a juicy, tender, and perfectly coated finish.

Common mistakes

One of the most common mistakes is overcrowding the skillet during the searing phase. If you dump all the beef into the pan at once, the temperature will drop rapidly, causing the meat to boil in its own moisture instead of searing.

This results in gray, tough beef without that signature caramelized crust. To avoid this, sear the beef in batches if necessary, ensuring each strip has enough space to make direct contact with the hot pan.

How to tell it’s done

To determine perfect doneness, the beef strips should be tender and juicy, easily giving way when bitten. Use a reliable instant-read digital meat thermometer inserted into the thickest part of the steak strips to ensure they have reached a safe internal temperature of 145°F (63°C).

After reaching this temperature, remove the skillet from the heat and let the meat rest for at least 3 minutes to allow the juices to redistribute throughout the beef.

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