Quick & Easy Beef Mushroom Stir-Fry
Tender beef stir-fried with mushrooms, onions and scallions in a savory sauce. This quick and easy beef mushroom stir-fry is delicious and ready in 30 minutes pairing beautifully with rice! A great main dish that's better-than-takeout, saving you money.

- Prep time
- 20 min
- Cook time
- 8 min
- Yield
- 4 servings
- Difficulty
- MEDIUM
Ingredients
Quantities are shown as originally provided.
- 1 lb flank steak (or skirt steak / flat iron steak / sirloin tip steak)
- 8 oz cremini mushrooms (or button mushrooms, sliced into quarters)
- 2 green onions (chopped into 2-inch-long pieces)
- 1/2 large onion (julienned)
- 1 tbsp vegetable oil (or any neutral oil)
- 3 tbsp water (room temperature)
- 1 tbsp cornstarch (or tapioca starch / potato starch)
- 1 tsp regular soy sauce (or light soy sauce)
- 1/2 tsp baking soda (to tenderize the beef)
- 1 tbsp vegetable oil (or any neutral oil)
- 1/4 cup chicken stock (low sodium (or sub with water))
- 3 garlic cloves (minced)
- 1.5 tbsp oyster sauce (or vegetarian stir-fry sauce)
- 1 tbsp dark soy sauce
- 1 tbsp Shaoxing wine (or dry sherry wine / dry white wine / chicken stock)
- 1/2 tbsp cornstarch (or tapioca starch / potato starch)
- 2 tsp white granulated sugar (or cane sugar)
- 2 tsp sesame oil
Instructions
- 1
Slice flank steak against the grain into 1/4-inch-thick pieces. Transfer beef slices to a large bowl.
- 2
Marinate sliced beef with marinade ingredients as listed above and set aside to marinate for 15 minutes at room temperature. Do not marinate past 30 minutes or this over tenderizes the beef and changes the taste.
- 3
In a small bowl, combine the sauce ingredients as listed above and set aside.
- 4
Heat vegetable oil in a large pan on medium heat, fry beef until cooked through and slightly browned, about 4-5 minutes. Remove cooked beef from the pan and set aside.
- 5
Sauté onions and mushrooms until slightly softened, about 2 minutes. Then pour in the sauce and simmer to thicken it.
- 6
Toss in cooked beef and green onions until beef is evenly coated in sauce, about 30 seconds. Serve and enjoy!