Preheat the oven to 180 C/ Fan 160 C/Gas 4. Beat the egg with the ground cumin and a little salt and pepper. Use a pastry brush to brush the spice egg wash over the tortillas. Scatter with whichever toppings you prefer, then cut each tortilla into triangles with scissors
Bake for about 10 minutes until crisp and golden, turning them over halfway through cooking. Keep a really close eye on them when you’re baking them though, as they can easily burn because they’re so thin. Serve with a colourful array of homemade dips