Crispy Chilli Beef Sweet Sauce

Featured in Satisfying Main Courses.

Beef steak gets soaked in soy, garlic, ginger, and a bit of spice, then coated with either potato starch or cornflour before being fried to a crisp, golden finish. Quickly stir-fry bright bell peppers, sweet onions, chillies, and spring onions so they stay crunchy. Everything gets tossed in a sticky, tangy sauce made of sweet chilli, a splash of vinegar, and some ketchup until the beef shines. Pile it over fluffy noodles or steamy rice right from the hot pan. You get lots of crisp, color, and sweet-spicy kick in every mouthful—people love it!

Barbara Chef
Updated on Mon, 09 Jun 2025 23:47:53 GMT
A plate of chicken with peppers. Pin it
A plate of chicken with peppers. | gracefulflavors.com

Sweet Chilli Beef with Crunchy Coating brings a cozy vibe and spicy kick with a shiny tang. It cooks up fast like a weeknight meal but feels fancy enough to share. The beef keeps its crazy crisp even when tossed in that sticky, sweet heat. When I whipped this up after work, my place smelled like steak sizzling and sweet onions caramelizing — it’s my go-to for making friends light up or cheering up my husband on rough days.

One wet evening, my brother came over. I made this dish, and after his first bite he said, why even order delivery when this exists?

Irresistible Ingredients

  • Sirloin or rump steak: cut thin for that tender bite, look for brightly colored beef with some light marbling
  • Egg: helps everything stick together, gets the edges even crispier
  • Potato flour or cornstarch: keeps every strip crispy—fresh works best
  • Sweet onion: full of mellow taste, makes the sauce just right; choose a solid, heavy one
  • Bell pepper: brings crunch and pretty color, grab a shiny one in whatever color you like
  • Bird’s eye or hot chillies: packs in heat and zing, pick tight, shiny ones
  • Spring onions: a pop of fresh bite right at the end
  • Light soy sauce: brings umami flavor, use a naturally brewed option
  • Ketchup: glossy and tangy, classic or organic is fine
  • White pepper: mellow heat you’ll taste in the finish
  • Ginger garlic paste: adds punch—go for grated fresh if you can
  • Sweet chilli sauce: gives the sticky finish, use one with real chilli bits inside
  • Sugar: balances and shines up the sauce, finer crystals melt faster
  • Salt: ties flavors together, unrefined sea salt if you’ve got it
  • Vinegar: for zing, white or rice vinegar work to lift the sauce
  • Sesame oil: brings toasty flavor, toasted type gives a stronger taste

Step-by-Step How-to

Finish Up & Serve:
Put your crisped beef onto a prewarmed serving dish. Dig in while it’s still hot so you can enjoy that crunch.
Bring It Together:
Tip in the fried beef, pour your stir fry sauce over the top with spring onions and fresh chillies. Crank up the heat and toss everything quickly until it’s all glossy—takes just a couple minutes.
Sauté the Veggies:
Get your wok or pan really hot again, add a bit more oil, throw in those sliced onions so they just begin to soften and smell good, then add bell pepper and toss real quick to keep them crisp.
Fry the Beef Strips:
Heat oil in a deep pan or wok to about 350°F. Drop your coated beef in, only a few strips at a time. Fry them for a minute or two till they’re extra golden and crunchy. Lay them on paper towels or a rack to drain any extra oil.
Cover in Starch:
Crack an egg into the marinated beef, stir till everything’s shiny. Toss the beef strips in starch so they’re all coated (break up any that stick). Shake off extra flour so the crunch isn’t thick.
Mix The Sauce:
Whisk together sweet chilli sauce, ketchup, soy sauce, vinegar, a pinch of sugar, and a little salt in a bowl until everything’s smooth. Set it aside—this is what brings all the flavors.
Get The Beef Marinated:
Cut beef thin against the grain so it’s super tender. Mix with ginger garlic paste, soy sauce, a splash of sesame oil, sugar, and white pepper till every piece is coated. Let it chill for 15 minutes to get that flavor inside.
Some chicken and bell pepper on a plate. Pin it
Some chicken and bell pepper on a plate. | gracefulflavors.com

I always add some extra sliced chillies to my plate since that spicy hit makes my day. Orange and red bell peppers are my favorites—they’re sweeter and pair so well with the beef and sauce warmth.

How to Store Leftovers

Let leftovers cool all the way, then pack beef and sauce in separate airtight containers. Heat the beef back up in a super hot oven or air fryer for a few minutes to crisp it up again. Warm the sauce in the microwave or on the stove and pour over right before you dig in.

Swap Suggestions

If you’d rather avoid beef, use tofu or chicken breast. Can’t find cornstarch? Potato starch or rice flour will still make it crunchy. Try sliced carrots or snow peas instead of bell pepper for a similar bite.

Fresh Serving Ideas

Serve on top of hot jasmine rice, toss with stir fry noodles, or even snack on it as a starter. Top with extra spring onion or coriander for a pop of green. Cold drinks make it even better.

Meat covered with pepper on a plate. Pin it
Meat covered with pepper on a plate. | gracefulflavors.com

Tradition and Origins

This meal has roots in old-school Chinese takeout, but folks at home have made their own sweet-spicy crispy meats for ages. It’s party food and celebration food in lots of kitchens. Deep-frying, then quickly tossing it in sauce, is a big thing in American Chinese cooking—the contrast of candy crunch with saucy heat keeps people coming back.

Frequently Asked Questions

→ How do I make the beef extra crispy?

Make sure each beef slice gets lots of coating, shake the extra off, then toss them in hot oil. Don't crowd your pan—if you need to, cook a little at a time so it stays crunchy.

→ Can I use a different cut of beef?

Absolutely! Sirloin, rump, or any soft steak works. Slice it thin so it cooks up fast and tender.

→ How spicy is this dish?

With bird’s eye chillies, you'll get medium spiciness. You can add more or less chillies and take out the seeds if you like it milder.

→ What vegetables can I add?

Classic picks are sweet onions, spring onions, and bell peppers. Want more crunch? Toss in carrots, broccoli, or snap peas!

→ Can I serve this with something other than rice?

Definitely! It goes great with fried noodles, or even as a finger food appetizer if that's your vibe.

→ How do I prevent the beef from getting soggy?

Add your crunchy beef right at the end and flip it with the sauce on high heat. Serve up right away so it stays crispy.

Crispy Chilli Beef Sweet Sauce

Crunchy beef, onions, and peppers, glazed in sweet chilli sauce for a bold, speedy Asian-inspired dinner.

Prep Time
20 Minutes
Cook Time
15 Minutes
Total Time
35 Minutes
By: Barbara

Category: Hearty Mains

Difficulty: Intermediate

Cuisine: Chinese

Yield: 2 Servings

Dietary: Dairy-Free

Ingredients

→ Main

01 2 spicy bird’s eye chillies, sliced up
02 2 spring onions, chopped
03 Half a bell pepper, in slices
04 Half a sweet onion, in slices
05 120 g corn or potato starch
06 1 egg
07 200 g sirloin or rump steak, cut thin

→ Beef Marinade

08 0.25 tsp white pepper
09 0.5 tsp sugar
10 1 tsp sesame oil
11 1 tsp ginger garlic paste
12 1 tbsp light soy sauce

→ Stir Fry Sauce

13 0.5 tsp salt
14 1 tbsp sugar
15 1 tsp rice or white vinegar
16 2 tbsp light soy sauce
17 2 tbsp ketchup
18 3 tbsp sweet chilli sauce

Instructions

Step 01

Put your stir fry on plates right away. Dive in while it's still hot, and if you like, add some noodles or fluffy rice on the side.

Step 02

Toss the crispy beef with the stir fried veggies in the wok. Drizzle the sauce over and add the sliced chillies and spring onions. Crank the heat and stir for a minute or two till everything's nicely coated and warm.

Step 03

Heat a spoonful of oil in a fresh wok over medium-high. First toss in the onion for just a bit, then add the bell pepper. Stir these around fast so they stay crisp.

Step 04

Pour oil into your wok or deep pan and get it hot to about 175°C. Drop in the flour-covered beef a few pieces at a time. Let them crisp up to a golden brown (about 1 or 2 minutes). Lift them out and let them cool off on a rack or some kitchen paper.

Step 05

After marinating, crack an egg over the beef and mix it well. Press each beef strip into plenty of starch so every bit gets covered. Make sure the pieces aren't sticking together, and knock off extra flour.

Step 06

Stir sweet chilli sauce, ketchup, soy sauce, vinegar, sugar, and salt in a bowl till smooth and blended. Just set this aside for later.

Step 07

Cut the steak into skinny slices. Toss them in a bowl with light soy sauce, a spoonful of ginger garlic paste, sesame oil, a dash of sugar, and white pepper. Mix it all up, cover it, and just let it hang out for 15 minutes.

Notes

  1. If you want that beef crackly and crisp, only fry a handful at a time. Eat it soon after cooking for the best crunch.

Tools You'll Need

  • Deep frying pan or wok
  • Cutting board and a good knife
  • Tongs or chopsticks
  • Bowls for mixing
  • Cooling rack or paper towels

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Has soy, eggs, and sesame. The oil used might include traces of gluten or other allergens.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 798
  • Total Fat: 26.75 g
  • Total Carbohydrate: 105.68 g
  • Protein: 37.56 g