Creating High-Protein Steak and Shrimp Stir-Fry can be a breeze following these straightforward steps:

1. Prepare the Ingredients: Thinly slice the steak and devein the shrimp. Cut vegetables into bite-sized pieces.
2. Marinate the Steak: In a bowl, combine sliced steak with 1 tablespoon of soy sauce, garlic, ginger, salt, and pepper. Let it marinate for about 10 minutes.
3. Heat the Skillet: In a large skillet or wok, heat vegetable oil over medium-high heat.
4. Cook the Steak: Add the marinated steak to the skillet and quickly sear for about 3-4 minutes until browned. Remove from the skillet and set aside.
5. Cook the Shrimp: In the same skillet, add peeled shrimp and cook for about 3 minutes or until they turn pink and opaque. Remove and set aside with the steak.
6. Stir-Fry the Vegetables: Add mixed vegetables to the skillet and stir-fry for 4-5 minutes until they are vibrant and slightly tender.
7. Combine Everything: Return the steak and shrimp to the skillet, add oyster sauce, sesame oil, and the remaining soy sauce. Stir everything together.
8. Adjust Seasoning: Taste and adjust seasoning if necessary. Cook for another 2 minutes to heat through.
9. Serve Immediately: Remove from heat and serve the stir-fry over cooked brown rice or quinoa.

Enjoy your High-Protein Steak and Shrimp Stir-Fry, which showcases vibrant colors and flavors!