Ingredients:

  • 1 lb sirloin steak, thinly sliced against the grain
  • 1 tbsp soy sauce
  • 1 tbsp cornstarch
  • 1 tbsp vegetable oil
  • 1/4 tsp salt
  • 1/4 tsp black pepper
  • 3 tbsp soy sauce
  • 1 tbsp brown sugar
  • 1 tbsp rice vinegar
  • 1 tsp toasted sesame oil
  • 1 tsp cornstarch
  • 2 tbsp water
  • 2 large bell peppers, cut into 1-inch squares
  • 1 medium yellow onion, cut into thick wedges
  • 3 cloves garlic, minced
  • 1 tbsp fresh ginger, grated
  • 2 stalks green onions, sliced into 1-inch pieces

Instructions:

  1. Toss the sliced steak in a bowl with 1 tbsp soy sauce, 1 tbsp cornstarch, salt, and pepper. Let it sit for 5-10 minutes to velvet the meat.
  2. Heat 1 tbsp of vegetable oil over high heat until just beginning to smoke. Spread the beef in a single layer and sear without moving for 1-2 minutes. Flip and sear for another minute until browned but not fully cooked through; remove from pan and set aside.
  3. In the same pan, toss in the onions and bell peppers. Stir-fry for 2-3 minutes until edges are slightly charred. Stir in the minced garlic, ginger, and the white parts of the green onions, cooking for 30 seconds until fragrant.
  4. Whisk the stir-fry sauce ingredients together and pour them over the vegetables. Stir-fry for 1 minute until the sauce bubbles and thickens. Return the seared beef and juices to the pan and toss for 60 seconds until glossy.