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Beef Onion Stir Fry – Quick, Savory, and Perfectly Tender

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Tender slices of beef stir-fried with sweet onions in a savory, glossy soy-based sauce. Quick, flavorful, and perfect for a weeknight meal.

Ingredients

Scale
  • 1 lb flank or sirloin steak, thinly sliced

  • 2 medium onions, sliced

  • 2 cloves garlic, minced

  • 1 tbsp soy sauce (for marinade)

  • 1 tsp Shaoxing wine (or dry sherry)

  • 1 tsp cornstarch (for marinade)

  • 1 tbsp soy sauce (for sauce)

  • 1 tbsp oyster sauce

  • 1 tsp sugar

  • 1 tsp Shaoxing wine (for sauce)

  • 1/4 cup water

  • 1/2 tsp cornstarch (for sauce)

  • 1 tbsp vegetable oil

  • 1 tsp sesame oil

Instructions

  • Marinate beef with soy sauce, Shaoxing wine, and cornstarch. Let sit 10–15 minutes.

  • Slice onions and prep garlic.

  • Mix sauce ingredients in a small bowl.

  • Heat oil in skillet or wok. Sear beef until browned, then remove.

  • Add onions and cook 4–6 minutes until softened. Add garlic and sauté 30 seconds.

  • Return beef to pan. Add sauce. Stir and cook until thickened.

  • Drizzle with sesame oil. Serve hot.

Notes

Great with rice, noodles, or veggies. Add chili flakes for spice or mushrooms for more depth.