Vegan Sweet Chili Beef Stir-Fry: Plant-Based Recipe with Seitan

If you’re searching for a plant-based dinner that delivers sweet, spicy, saucy, and satisfyingly “meaty” flavors, save this recipe. This vegan sweet chilli “beef” captures everything you love about Chinese takeout—without the actual beef. Trust me, you won’t miss it.

I use lion’s mane mushrooms because they shred like short ribs, crisp up on the edges, and soak up that sticky-sweet chilli sauce. The result is incredibly satisfying; even meat-eating friends often ask for seconds. If you enjoy meatless swaps, try the other mushroom recipes from the same author for more inspiration.

Here’s how to make the best vegan sweet chilli “beef.”

vegan beef

Table of contents

  • Key Ingredients
  • What Is Lion’s Mane and Why It Works
  • Common Mistakes to Avoid + Pro Tips
  • FAQ

Key Ingredients

Lion’s Mane Mushrooms: The star ingredient. When torn into strips and pan-fried, lion’s mane develops golden, crispy edges and a tender, meaty interior. Its shredded texture is closer to pulled beef or brisket than many store-bought alternatives.

Bell Peppers & Onion: A mix of red and green bell peppers with yellow onion provides color, crunch, and the familiar stir-fry balance that offsets the sauce’s richness.

Red Chilli: One sliced red chilli adds a gentle heat that complements the sweet and savory layers.

Sweet Chilli Sauce: The sticky-sweet backbone of the dish with a touch of spice and tang.

Dark Soy Sauce: Adds depth, saltiness, and a caramel tone that helps make the mushrooms look and taste more “beefy.”

Vegan Oyster Sauce: Boosts umami and gives the sauce that takeout-style finish.

Ketchup: Adds sweetness, acidity, and body—an important component for the sauce’s balance.

Garlic & Ginger Paste: A teaspoon of each gives the sauce an aromatic backbone. Fresh works well too, but paste is quick and convenient.

Cornstarch + Water: A slurry thickens the sauce so it clings beautifully to the mushrooms.

vegan sweet chilli beef

What Is Lion’s Mane and Why It Works

Lion’s mane is a white, shaggy mushroom that naturally pulls apart into fibers that resemble shredded meat. When cooked properly it crisps on the outside while remaining juicy inside—similar to a well-seared beef strip.

Benefits for vegan “beef” recipes:

  • Shreds like meat: Easy to pull into bite-sized strips for a pulled texture.
  • Holds sauce: Its fibrous structure soaks up and traps flavor.
  • Crisps well: Pan-frying gives appealing browned edges for contrast.
lions mane

Common Mistakes to Avoid + Pro Tips

Tear, don’t cut: Tearing creates a pulled, meat-like texture.

Don’t overcrowd the pan: Crowding causes steaming instead of browning—cook in batches if needed.

Use a hot pan: Let the mushrooms sit to develop golden edges for maximum texture.

Taste the sauce first: Adjust sweetness, salt, or acidity before adding it to the pan.

Garnish: Sprinkle sesame seeds or sliced spring onions for extra flavor and presentation.

how to make vegan beef

For more ideas, explore additional vegetarian meat substitutes and mushroom-based recipes from the same author.

FAQ

Can I use another mushroom?

Yes. Shredded king oyster mushrooms are a good alternative, though lion’s mane gives the most meat-like texture for this dish.

Can I air fry this recipe?

You can air-fry for a lighter texture, but pan-frying typically yields the best crispiness. If air-frying, lightly spray the mushrooms with oil and monitor closely.

Vegan Sweet Chilli Beef

Crispy lion’s mane mushrooms tossed in a sticky, savory-sweet sweet chilli sauce with peppers and onions. Easy to make, satisfying, and tastes like takeout—completely meatless.
Servings: 3
vegan beef featured image
Prep Time: 5 mins
Cook Time: 20 mins

Ingredients

Base for beef:

  • 12 ounces lion’s mane
  • 1/4 large red bell pepper
  • 1/4 large green bell pepper
  • 1/4 yellow onion
  • 1 red chilli

Sauce

  • 1 tbsp dark soy sauce (plus 1 extra tsp)
  • 2 tbsp sweet chilli sauce
  • 2 tsp rice vinegar
  • 2 tbsp ketchup
  • 1 tsp sesame oil
  • 1 tbsp vegan oyster sauce
  • 2 tsp minced garlic paste
  • 1/2 tsp minced ginger paste
  • 1/2 tbsp cornstarch
  • 3 tbsp water

Instructions

  • Prepare mushrooms: Tear lion’s mane into bite-sized pieces. Pat dry if very wet so they crisp instead of steam.
  • Marinate the mushrooms: Whisk together sweet chilli sauce, dark soy sauce, ketchup, vegan oyster sauce, rice vinegar, sesame oil, garlic paste, ginger paste, and the cornstarch slurry (cornstarch mixed with a few tablespoons of water). Toss the mushrooms in the sauce and let them sit for a few minutes.
  • Sauté aromatics and veggies: Heat 1 tbsp oil in a pan. Add sliced onion, bell peppers, and red chilli. Cook 3–4 minutes until slightly softened but still vibrant.
  • Sear mushrooms: In a separate pan, heat the remaining 1 tbsp oil. Add the marinated mushrooms and sear until they crisp. Because mushrooms release water this can take 10–12 minutes or more—keep the heat medium and be patient.
  • Combine everything: Add the crisped mushrooms to the vegetable pan and stir-fry together for 1–2 minutes so the sauce coats everything.
  • Serve: Serve the sweet chilli “beef” over rice, toss with noodles, or wrap in lettuce for a fresh alternative.

Notes

(1) The technique requires patience because mushrooms release moisture—searing slowly yields the best texture. Alternatively, sear first and then add the sauce to thicken; the texture will vary slightly.

(2) For more heat, add sriracha or crushed red pepper flakes.

(3) Avoid overcrowding the pan so mushrooms can brown properly.

(4) Pairs well with rice, noodles, or lettuce wraps.

(5) Lion’s mane can often be found at Asian grocery stores, farmers’ markets, or specialty produce shops.

Nutrition

Calories: 118 kcal,
Carbohydrates: 23 g,
Protein: 4 g,
Fat: 2 g,
Sodium: 719 mg,
Fiber: 3 g,
Sugar: 12 g

Nutrition information is an approximation and should be used as a guideline.

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