Heat a dry frying pan over a medium-high heat and cook the corn for a few minutes without stirring, then shake the pan and continue to cook for 5 mins until the kernels have browned. Tip onto a plate and leave to cool slightly.

Combine the prawns, Cajun spice blend and a pinch each of salt and pepper in a small bowl. Heat half the oil in the same pan as used to char the corn and cook the prawns over a medium-high heat for 2-4 mins, stirring until pink and cooked through. Transfer to the plate with the corn.

Combine the lime juice, honey, remaining oil and chopped jalapeño (if using) in a large bowl, and season well. Add the red peppers, avocado, spring onions, coriander and lettuce, then toss well. Stir in the corn and prawns, then serve.