- For the Caesar sauce, combine the vegan mayonnaise, nutritional yeast, lemon juice, mustard, soy sauce, maple syrup and garlic. Using a hand blender, blend until smooth.
- Heat a griddle pan until smoking hot. Brush the Quorn Vegan Fillets with the olive oil and grill until charred and cooked through, 3-4 minutes per side.
- Open each burger bun and grill the buns in the same griddle pan until crisp and charred, 1 minute.
- Spread some Caesar sauce onto the base of each crisp burger bun. Top it with the sliced vegan cheese, Romaine lettuce, avocado slices, grilled fillets and sliced onions. Top each burger with the top halves of the burger buns.
TIP: The Quorn Vegan Fillets can easily be replaced with Quorn Spicy Patties for a spicier alternative.