Photo: SmashburgerTruffle Mushroom Smash
Smashburger’s grown-up burger. A smashed patty with sautéed mushrooms, Swiss cheese and a truffle mayo that is more earthy than perfumed. The umami from the mushrooms and the browned crust make it one of the most satisfying things on the menu if you are tired of bacon and barbecue.
What’s inside
- smashed Angus beef patty
- sautéed mushrooms
- Swiss cheese
- truffle mayo
- toasted bun
Make it at home
There is no copycat of the Truffle Mushroom Smash yet. Until there is, these recipes on the site come closest to it, judged by what goes into the bun.
- Shares beef, mushrooms, truffle and cheese
Mushroom Swiss Smash Burgers with Truffle Sauce - Shares beef, mushrooms and cheese
French Onion Burgers - Shares beef, mushrooms and cheese
Mushroom Swiss Burger - Shares beef, mushrooms and cheese
Portobello Mushroom Burgers
Similar burgers at other chains
Built around the same things as the Truffle Mushroom Smash.- Holy Cow! · beef, mushrooms, truffle and cheese
The Hobbit - SALT · beef, mushrooms, truffle and cheese
Truffle Slider - Byron · beef, mushrooms, truffle and cheese
Portobello Truffle - BurgerFuel · beef, mushrooms, truffle and cheese
V-Rod
More from Smashburger
About Smashburger
Smashburger opened in Denver, Colorado, in 2007 with one technique as its entire identity: a ball of Certified Angus Beef is pressed hard onto a hot griddle with a heavy tool, so it spreads thin and forms a deep brown crust in seconds. Home cooks and food writers had long loved the method; Smashburger was one of the first chains to build a brand around it.
Around 200 restaurants, mostly in the US. Owned by the Philippine company behind Jollibee.
Not affiliated with Smashburger. Trademarks belong to their owners. The photo is credited under it and is used to illustrate this menu item; it comes down on request.


