Can this be made in under 30 minutes?

Yes, the recipe is designed to be quick and efficient.

Does it work for meal prep?

Most versions store well for one to three days.

Yes, simple swaps can be made for convenience or dietary needs.

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In a large bowl, combine the sliced steak with soy sauce, oyster sauce, and cornstarch. Let marinate for 15 minutes.
Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add the marinated steak and stir-fry for about 3-4 minutes until browned. Remove from the pan and set aside.
In the same pan, add the shrimp and cook for 2-3 minutes until they turn pink. Remove and set aside with the steak.
Add the remaining oil to the pan, then toss in the garlic and mixed vegetables. Stir-fry for 4-5 minutes until the vegetables are tender-crisp.
Return the steak and shrimp to the pan, mix well, and cook for an additional 2 minutes. Season with salt and pepper to taste.
Serve hot over cooked rice or noodles.

Use pre-sliced beef or frozen mixed vegetables to save time.