Tender beef strips and colorful bell peppers in a savory sauce crown steamed rice. This high protein family bowl is quick, satisfying, and loaded with fresh vegetables.
Slice the beef sirloin thinly against the grain and pat dry for even searing.
Whisk together soy sauce, beef broth, cornstarch, brown sugar, and black pepper to form the sauce base.
Heat 1 tablespoon oil in a large skillet over medium-high heat; add beef and sear for 2-3 minutes until browned but not fully cooked. Remove from pan.
Add remaining oil, then sauté sliced onion and both bell peppers on medium-high heat for 4-5 minutes until tender-crisp.
Return beef to the pan, add garlic, and pour in the prepared sauce. Stir well and simmer on medium for 3-4 minutes until the sauce thickens and beef is just cooked through.
Serve the pepper steak hot over bowls of freshly steamed rice.