Before starting, preheat the oven to 450˚F.Wash and dry all produce. Finely chop parsley.Add beef, breadcrumbs and half the parsley to a large bowl. Season with 1/2 tsp (1 tsp) garlic salt and 1/8 tsp (1/4 tsp) pepper, then combine. Form mixture into two (four) 4-inch-wide patties.

Heat a large non-stick pan over medium heat.When hot, add patties to the dry pan. (NOTE: Don't overcrowd the pan; cook patties in 2 batches if needed.) Pan-fry until cooked through, 4-5 min per side. ** Transfer to a plate, then cover to keep warm.

Meanwhile, cut ciabatta into 1/2-inch pieces.Add ciabatta and 1 tbsp (2 tbsp) oil, 1/4 tsp (1/2 tsp) garlic salt and pepper to an unlined baking sheet.Toss to combine. Toast in the middle of the oven, stirring halfway through, until lightly golden, 5-8 min.

Meanwhile, cut tomato into 1/4-inch pieces.Cut cucumber into 1/4-inch half-moons.Add spring mix, cucumbers, tomatoes and Italian dressing to another large bowl. Toss to combine. Season with salt and pepper, to taste.

Whisk together tzatziki, 2 tbsp (4 tbsp) water and remaining parsley in a small bowl.

Add half the croutons to salad, then toss to combine. Divide salad between plates. Sprinkle over remaining croutons. Top with bunless burger.Sprinkle over feta.Drizzle over tzatziki drizzle.