Instructions:

1. Marinate the Steak:

   • In a bowl, mix the thinly sliced flank steak with cornstarch, 1 tablespoon of soy sauce, salt, and pepper. Let it marinate for about 15-20 minutes.

2. Prepare the Stir-Fry:

   • Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add the marinated steak in a single layer and stir-fry for about 2-3 minutes until browned. Remove the steak from the skillet and set aside.

3. Cook the Vegetables:

   • In the same skillet, add the remaining 1 tablespoon of vegetable oil. Add the minced garlic and ginger, and stir-fry for about 30 seconds until fragrant. Then, add the green beans and red bell pepper. Stir-fry for about 4-5 minutes until the vegetables are tender-crisp.

4. Combine Everything:

   • Return the cooked steak to the skillet. Pour in the remaining 2 tablespoons of soy sauce and oyster sauce (if using). Add the roasted peanuts and toss everything together. Stir-fry for another 1-2 minutes to heat through and combine the flavors.

5. Serve:

   • Serve the stir-fried green beans with steak and peanuts over a bed of cooked rice. Enjoy your delicious and nutritious meal!

This Stir-Fried Green Beans with Steak & Peanuts dish is quick to prepare and packed with flavor, making it a perfect weeknight dinner option!