Fifteen-Minute Pepper Steak Stir-Fry for Busy Weeknights

Fifteen-Minute Pepper Steak Stir-Fry for Busy Weeknights

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Some nights you want something that tastes like it came from a takeout box without the wait or the price. Pepper steak gets you there: strips of beef, crunchy peppers and onion, all tossed through a glossy soy sauce in one pan. It is quick enough for a Tuesday after lectures and cheap enough to make for one or stretch across four plates when people land on your sofa uninvited.

The whole thing is done in the time it takes rice to cook, which is really the point. No marinating overnight, no special equipment beyond a frying pan or wok. Slice everything thin, have your sauce whisked before the pan gets hot, and the cooking itself takes about ten minutes.

Ingredients

Serves 2 (double everything for 4):

  • 300g flank, skirt or sirloin steak, very thinly sliced against the grain
  • 1 tablespoon cornflour, plus 1 teaspoon for the sauce
  • Salt and black pepper
  • 2 tablespoons vegetable or sunflower oil, divided
  • 2 bell peppers (any colours you have), thinly sliced
  • 1 small onion, thinly sliced
  • 2 garlic cloves, finely chopped
  • 1cm piece fresh ginger, grated, or 1/2 teaspoon ground ginger
  • 2 tablespoons soy sauce
  • 1 tablespoon oyster sauce
  • 1 teaspoon dark brown sugar
  • 80ml water
  • 150g rice, uncooked, to serve
  • 1 spring onion, sliced, to serve (optional)

Method

  1. Get your rice cooking first if you are serving it, so everything finishes together.
  2. Slice the steak into thin strips, cutting across the grain of the meat. Going against the grain makes all the difference and keeps the steak from turning chewy. Toss the strips with 1 tablespoon cornflour, a pinch of salt and pepper.
  3. In a small bowl, whisk the soy sauce, oyster sauce, brown sugar, water and the remaining teaspoon of cornflour until smooth. Set aside.
  4. Heat 1 tablespoon of oil in a large frying pan or wok over high heat until it shimmers. Add the steak in a single layer and leave it undisturbed for about 2 minutes so it browns, then stir and cook 1 minute more. Transfer to a plate.
  5. Add the remaining oil to the pan, then the onion and peppers. Cook for 4 to 5 minutes, stirring often, until they soften slightly but still have some bite.
  6. Add the garlic and ginger and cook for 30 seconds, just until fragrant.
  7. Return the steak to the pan, pour in the sauce, and toss everything together for about a minute, until the sauce thickens and coats the meat and vegetables evenly.
  8. Spoon over the rice and scatter with spring onion if using. Eat straight away, while the peppers are still crisp.

At a glance

Stage Time Serves Approx cost per portion
Prep (slicing, sauce) 10 minutes 2 under £4
Cooking 10 minutes 2 under £4
Doubled for friends 20 minutes total 4 under £4 each

Flank and skirt steak are the cuts worth looking for here. They are leaner and cheaper than a sirloin or ribeye, and slicing them thin against the grain is what keeps them tender in a fast stir-fry rather than tough. A tougher cheaper cut like chuck steak can work too, but it needs a tenderising trick first or it turns out tough as leather. Stick with flank or skirt and you can skip that step entirely.

Prices for flank steak vary a fair bit between UK butchers and online shops, so it’s worth a quick look around before you buy.

Flank steak prices at UK butchers and farm shops
Flank steak prices at UK butchers and farm shops

Peppers are one of the cheaper vegetables to keep stocked for stir-fries. A pack of three mixed peppers from Tesco runs to under a pound, which covers more than enough for this recipe with some left for lunch the next day.

Swaps and tips

Going vegetarian or vegan is an easy switch here. Swap the steak for a block of firm tofu, pressed and cut into cubes, or thick slices of mushroom such as chestnut or king oyster, which hold up well to the high heat. For the sauce, mushroom sauce or mushroom stock makes one of the closest matches to the real thing, giving a deep savoury flavour without any animal ingredients, and it’s sold as “vegetarian oyster sauce” in most Asian grocers and some larger supermarkets.

If gluten is an issue, swap the soy sauce for tamari and check the label on your oyster sauce, since some brands use wheat as a thickener. There are gluten-free versions available, usually labelled clearly.

Leftovers keep well in the fridge for up to two days. Reheat gently in a pan with a splash of water so the sauce loosens back up, then spoon it over noodles, into a wrap, or onto a baked potato for a different meal entirely. If you’ve doubled the batch for friends, it’s just as good packed into a container for next day’s lunch.

Allergen note: this recipe contains soy and gluten (soy sauce and most oyster sauces) and oyster sauce is made from shellfish, so it is not suitable for shellfish allergies unless you use a mushroom-based substitute. Always check labels, since brands vary.

Sources

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