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Second City Diner veggie burger recipe for a tasty meal

The Second City Diner Veggie Burger is a hearty vegetarian option that beautifully captures the essence of satisfying comfort food. Featuring a blend of finely chopped mushrooms, onions, and celery, this burger is elevated by flavourful seasonings like garlic and onion powder. The addition of rolled oats not only contributes to its delightful texture but also provides a nutritious base that will leave you feeling content.

Perfect for family dinners or casual gatherings, this easy-to-make veggie burger is an ideal choice for those looking to enjoy a wholesome meal without sacrificing taste. Serve it on a toasted bun with your favourite toppings, and you’ll have a deliciously balanced dish that appeals to both vegetarians and meat-lovers alike.

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Ingredients for Second City Diner veggie burger

  • 960 ml water

  • 1 onion, finely chopped

  • 3 stalks celery, finely chopped

  • 60 ml reduced-salt soy sauce

  • 10 g onion powder

  • 10 g garlic powder

  • 2 g freshly ground black pepper

  • 360 g rolled oats (not quick-cooking)

  • 340 g mushrooms, finely chopped

  • 60 g plain flour

How to make Second City Diner veggie burger

  1. Place the water in a large pot and add the onion, celery, soy sauce, onion powder, and garlic powder.

  2. Bring to a boil, then reduce the heat and simmer for 5 minutes.

  3. Stir in the oats, mushrooms, and flour, and cook for an additional 5 minutes.

  4. Transfer the mixture to a bowl and chill for at least 1 hour, preferably longer.

  5. Preheat the oven to 180°C (conventional).

  6. Shape the chilled mixture into burger-sized patties and place them on baking trays.

  7. Bake for 15 minutes, then remove from the oven and let rest for 5 minutes.

  8. Carefully flip the patties over and bake for another 10 minutes.

  9. Before serving, place the baked patties on a non-stick griddle and grill for about 7 minutes on each side, until browned.

  10. Serve the patties on buns with your choice of toppings.

Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

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Article history

The information on this page is peer reviewed by qualified clinicians.

  • 30 Oct 2025 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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