1Prepare the coleslaw: finely chop red cabbage, carrots and onions. Mix with mustard, mayonnaise, black pepper, sugar, and white vinegar.
2Make the hot honey sauce: mix honey and chilli flakes.
3Cut halloumi into two slices. Pat it dry with a paper towel before use.
4Prepare three bowls: one with flour, one with whisked egg, and one with panko breadcrumbs mixed with sesame and nigella seeds.
5Dredge halloumi in flour, dip in the egg mixture, and coat with panko breadcrumbs.
6Fry halloumi on both sides until golden and crispy.
7Assemble the burger: Spread coleslaw on the bottom half of the brioche bun, top with halloumi, hot honey sauce, and spicy sauce. Cover with the top bun.