Description
A quick and flavorful Beef Onion Stir Fry featuring tender sirloin beef, sweet onions, and colorful bell peppers, all cooked in a savory soy and sesame sauce. Perfect for a fast, satisfying weeknight meal that pairs beautifully with steamed rice or noodles.
Ingredients
Scale
Beef and Marinade
- 1 lb beef sirloin, sliced against the grain
- 3 tbsp low-sodium soy sauce
- 1 tbsp brown sugar
- 1 tsp cornstarch mixed with 2 tbsp water
Vegetables
- 2 medium yellow onions, thinly sliced
- 1 cup bell peppers (red, yellow, or green), sliced
- 3 cloves garlic, minced
Oils
- 1 tbsp sesame oil
- 2 tbsp vegetable oil
Instructions
- Marinate Beef: In a bowl, combine sliced beef sirloin with low-sodium soy sauce, brown sugar, and the cornstarch-water mixture. Let it marinate for at least 15 minutes to tenderize and infuse the beef with flavors.
- Sauté Aromatics: Heat vegetable oil in a large skillet over medium-high heat. Add minced garlic and thinly sliced yellow onions, sautéing them until they become translucent and fragrant, around 3-4 minutes.
- Cook Bell Peppers: Add the sliced bell peppers to the skillet and stir-fry for 2-3 minutes until they are slightly softened but still crisp.
- Brown the Beef: Push the vegetables to the side of the skillet. Add the marinated beef in a single layer and cook uncovered for about 4-5 minutes, allowing it to brown and cook through.
- Combine and Thicken: Return the vegetables to the center and pour in any remaining marinade. Add sesame oil and stir everything together, cooking for another 2-3 minutes until the sauce thickens and coats the ingredients evenly.
- Serve: Remove from heat and serve the beef onion stir fry hot, ideally over steamed rice or noodles for a complete meal.
Notes
- Slice beef against the grain for the most tender texture.
- Use low-sodium soy sauce to manage salt levels.
- Adjust the amount of brown sugar to taste for sweetness balance.
- You can substitute beef sirloin with flank steak or rump steak.
- Feel free to add other vegetables like snap peas or mushrooms for variety.
- Serve immediately for best texture and flavor.
