What beef cut is best for stir-fry?

Flank steak, sirloin, and thin pre-cut stir-fry beef all work if sliced across the grain.

Can I use chicken instead of beef?

Yes. Thin chicken breast or thigh strips work with the same sauce and vegetable method.

How do I stop beef stir-fry from becoming tough?

Slice thinly, coat with cornstarch, cook quickly over high heat, and remove it as soon as it is just cooked.

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Beef and Bell Pepper Stir-Fry

By Chinese Food at Home

Thin beef, bell peppers, onion, garlic, ginger, and a soy-based sauce for a fast skillet dinner.

3 servings
25 minutes
Medium
None heat

Beef and bell pepper stir-fry is a fast skillet dinner that works with common steak cuts and sweet peppers. Thin slicing and a light cornstarch coating help the beef cook quickly and stay tender without restaurant equipment.

The dish is flexible: use flank, sirloin, or pre-cut stir-fry beef, choose any color bell pepper, and swap oyster sauce when needed. Serve it with rice or a crisp cucumber salad.

It uses common steak cuts and sweet peppers while keeping the classic stir-fry method.

Before You Start

Set up first

Large skillet or wok, Sharp knife, Small bowl

Key ingredients

beef
bell pepper
onion
soy sauce
oyster sauce
cornstarch

Beginner prep

Read all steps once before heating the pan, pot, or skillet. Chinese home cooking often moves quickly after the oil or broth is hot.
Measure sauces, chop aromatics, and place ingredients near the stove before you start cooking.
For stir-fries and skillet dishes, keep ingredients separated by cooking order so nothing overcooks while you look for the next item.
If serving with rice, start the rice first so the hot topping is ready at the same time.

Success check: The food should look glossy and hot, with vegetables still holding some texture instead of turning watery.

1. Slice beef across the grain 2. Marinate and mix the sauce 3. Cook the peppers first 4. Sear the beef quickly 5. Add garlic, ginger, and vegetables 6. Coat with sauce and serve

Ingredients

beef: 450 g / 1 lb.
bell pepper: 2.
onion: 1/2.
soy sauce: 3 tbsp.
oyster sauce: 1 tbsp. Substitution: Use hoisin plus soy sauce for a sweeter version.
cornstarch: 2 tsp.
garlic: 2 cloves.
ginger: 1 tsp grated.
rice: Cooked rice, to serve (optional).

Steps

Slice beef across the grain
Look for the lines running through the beef and cut across those lines into thin strips. Thin slices cook quickly and feel tender. If the beef is hard to slice, put it in the freezer for 10 to 15 minutes so it firms up slightly.
Marinate and mix the sauce
Toss the beef with part of the soy sauce and cornstarch until the pieces look lightly coated. In a separate bowl, mix the oyster sauce, remaining soy sauce, and a splash of water. Cut the bell peppers and onion before heating the pan.
Cook the peppers first
Heat a large skillet over medium-high heat with a little oil. Add bell peppers and onion, then stir-fry for 2 to 3 minutes. They should smell sweet and look brighter but still have crunch. Move them to a plate.
Sear the beef quickly
Add the beef to the hot pan in a single layer. Let it brown for about 45 seconds before stirring. Cook just until most pieces lose their raw red color. If the pan is crowded, cook half at a time so the beef browns instead of steams.
Add garlic, ginger, and vegetables
Add garlic and ginger to the beef and stir for 20 to 30 seconds. Return the peppers and onion to the pan. Toss everything together so the aromatics are spread through the meat and vegetables.
Coat with sauce and serve
Pour in the sauce and stir until it bubbles and lightly coats the beef and peppers. Turn off the heat as soon as the sauce looks glossy. Serve with rice, making sure not to keep cooking after the beef is tender.

Western Grocery Notes

Flank steak, sirloin, or pre-cut stir-fry beef all work.
Use red, yellow, or green bell peppers.

Substitutions

Use chicken or tofu instead of beef.
Use hoisin plus soy sauce if oyster sauce is unavailable.

Ingredient Alternatives

Beef
Provides savory protein and stir-fry texture.

Alternatives: Flank steak, Sirloin, Pre-cut stir-fry beef. Slice across the grain as thinly as possible. Partially freezing the beef for 15 minutes makes slicing easier.
Bell pepper
Adds sweetness, color, and crunch.

Alternatives: Red pepper, Yellow pepper, Capsicum. Cut peppers into similar widths so they cook evenly.
Oyster sauce
Adds body and savory sweetness.

Alternatives: Hoisin plus soy sauce, Vegetarian oyster sauce, Soy sauce plus a pinch of sugar. Taste before adding more salt because oyster sauce and soy sauce both season strongly.

Cook Better Next Time

Cook peppers first, remove them, then sear beef so neither component overcooks.
Use high heat and spread beef in a single layer before stirring.
Return vegetables only at the end so they stay crisp-tender.

FAQ

What beef cut is best for stir-fry?: Flank steak, sirloin, and thin pre-cut stir-fry beef all work if sliced across the grain.
Can I use chicken instead of beef?: Yes. Thin chicken breast or thigh strips work with the same sauce and vegetable method.
How do I stop beef stir-fry from becoming tough?: Slice thinly, coat with cornstarch, cook quickly over high heat, and remove it as soon as it is just cooked.

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