01 - Preheat oven to 400°F (200°C). Arrange cauliflower florets on a baking sheet, drizzle with 1 tbsp olive oil, and roast for 20 minutes until tender and lightly golden. Let cool slightly.
02 - In a food processor, combine the chickpeas, roasted cauliflower, red onion, garlic, and parsley. Pulse until cohesive but still retaining some texture.
03 - Transfer the processed mixture to a large bowl. Add the breadcrumbs, egg (or flaxseed egg), lemon juice, cumin, smoked paprika, coriander, salt, and pepper. Mix thoroughly until well combined.
04 - With damp hands, shape the mixture into 4 equal patties. If the mixture feels too wet, add additional breadcrumbs 1 tbsp at a time until it holds together.
05 - Heat 1 tbsp olive oil in a large skillet over medium heat. Cook the patties for 4–5 minutes per side until golden brown and heated through.
06 - Toast the burger buns if desired. Layer each bun with a patty, salad greens, sliced tomatoes, pickles, and your favorite sauces.