Grilled prawn and avocado salad

Ingredients

• 250 g frozen large shell-on raw prawns, defrosted
• 2 tbsp extra virgin olive oil
• 2 tsp tajin seasoning (see tip)
• 1 large garlic clove, chopped
• 2 limes
• 1 red onion, finely sliced
• 2 firm avocados, halved
• 5 tbsp mayonnaise
• Large handful coriander, chopped, a few leaves reserved
• 2 baby gem lettuce, chopped
• ½ x 70 g bag rocket
• 400 g tomatoes, chopped or halved
• 30 g feta cheese, crumbled