Begin by preparing the beef: wash, clean, and slice it into strips.
In a bowl, combine the beef strips with thyme, onion, garlic, scallion, ginger, beef or all-purpose seasoning, salt, and a teaspoon of browning sauce. Allow the mixture to marinate.
Heat cooking oil in a skillet pan over medium heat until hot. Remove the beef from the marinade and add it to the hot oil.
Stir the beef strips until they are evenly browned on all sides.
Once the beef is browned, reintroduce the separated marinade to the pan. Cook for an additional 3-4 minutes.
Incorporate bell peppers, the remaining browning sauce, beef broth, and cornstarch whisked in beef broth. Allow the mixture to simmer for 5-7 minutes, or until the sauce thickens.
Notes
- If sirloin is unavailable, flank or round steak can be used as alternatives.
- Adjust the amount of beef broth based on the consistency of the sauce. If there is excess liquid from the meat, omit adding beef broth and use some of the sauce from the pan to mix with the cornstarch before returning it to the pan.