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Five Guys cheese veggie sandwich

A super easy copycat recipe for the Five Guys cheese veggie sandwich - one of my favourite vegetarian fast food options ever!
Prep Time10 mins
Cook Time10 mins
Total Time20 mins
Course: Light lunch, Main meals
Cuisine: American
Servings: 3 sandwiches
Calories: 419kcal
Author: Becca Heyes


  • 1 tbsp oil
  • 1 tbsp butter
  • 1 onion, cut into bitesize pieces
  • 1 green pepper, cut into bitesize pieces
  • 4 medium mushrooms, cut into bitesize pieces
  • 3 sesame-topped burger buns
  • 2 tbsp mayonnaise
  • 2 tbsp ketchup
  • 6 slices American-style cheese
  • 3 large leaves baby gem lettuce
  • 1 large tomato, sliced


  • Heat the oil and butter in a frying pan over a medium heat, and add the chopped onion, green pepper and mushrooms. Cook for 5 minutes or so, until fairly soft, but still retaining a bit of bite.
  • Cut the burger buns in half, and toast lightly (either in a toaster, or in a dry frying pan). Spread one half of each bun with mayonnaise, and the other half with ketchup.
  • Distribute the sautéed vegetables between the three buns, and top each with two slices of American cheese. Finish with some lettuce leaves and sliced tomato (or your choice of additional toppings). Replace the lid of each bun, and wrap them in foil to serve, if desired.


Serving: 1sandwich | Calories: 419kcal | Carbohydrates: 45.8g | Protein: 13.8g | Fat: 21.1g | Saturated Fat: 8.4g | Cholesterol: 38mg | Sodium: 887mg | Potassium: 496mg | Fiber: 5g | Sugar: 13.1g | Calcium: 323mg | Iron: 3mg