Burger King: What’s Vegetarian Editorial Review

Burger King’s main vegetarian pick is the Impossible Whopper, a genuine plant-based burger rather than a salad-and-a-shrug compromise. It’s a permanent menu item at most US locations, not a limited-time test, which makes Burger King one of the more reliable fast-food stops for a real meat-free meal. The chain runs roughly 6,500 US locations under parent company Restaurant Brands International, the same corporate group behind Popeyes and Firehouse Subs, so this isn’t a boutique exception, it’s baked into a well-established chain.

What to order at Burger King

Order the Impossible Whopper with no mayo and you get a fully vegan sandwich, since the soy-based patty, sesame bun, lettuce, tomato, ketchup, pickles, and onions are all plant-based. As served with mayo, it’s vegetarian rather than vegan because the mayo contains egg. Round out the meal with French fries, hash browns, onion rings, or French toast sticks, all of which are vegan.

What to watch out for

The plant-based patty cooks on the same flame broiler as the beef Whopper, so if shared-grill contact matters to you, ask before you order. Watch for the 2026 Impossible Maple Bourbon BBQ Whopper, which isn’t vegetarian despite the plant-based name. The Croissan’wich bread and mozzarella sticks are vegetarian but not vegan, and Burger King doesn’t market the sandwich itself as vegan, so treat any vegan claim as something you build yourself at the counter.