Thinly slice the onion. Thinly slice the cabbage with a sharp knife or mandoline. Shred the carrot using a julienne peeler or coarsely grate with a box grater. Combine half the barbecue seasoning* and 2 tsp olive oil in a large bowl and season with salt and pepper. Add the chicken and toss to coat.
Step 2 — Fry onion
Put 1 tbs flour in a bowl, season with salt and pepper and stir to combine. Dust the onion in the seasoned flour. Heat 1½ tbs olive oil in a medium frypan over medium-high heat. Cook the onion, stirring occasionally, for 6-7 mins until crisp and golden. Remove from the pan.
Step 3 — Pan-fry chicken
Preheat the grill to high. Return the same pan to medium-high heat. Add the chicken and cook for 3-4 mins each side until browned and cooked through. Remove from the pan.
Step 4 — Toast buns
Meanwhile, cut the buns in half. Put on an oven tray, cut-side up, and grill for 1-2 mins until lightly toasted. Combine 2 tbs mayonnaise, 2 tsp white vinegar and 1 tsp dijon mustard in a large bowl and season with salt and pepper. Add the cabbage and carrot and toss to combine.
Step 5 — Serve up
Halve the chicken on an angle. Layer the bun bases with slaw, chicken and onion, then sandwich with the tops. Divide the burgers among plates, serve with the remaining slaw and enjoy!
Step 6 — Make it yours
Spread the bun bases and tops with your favourite sauce or mayo for extra yum factor.