Beef burgers with grilled halloumi

Ingredients

• 400 g minced beef
• 1 shallot, finely chopped
• 1 clove garlic, finely chopped
• 1 egg
• 1 tablespoon bread crumbs
• 2 tablespoons chopped basil
• salt
• black pepper
• 4 buns
• 4 thin slices of halloumi
• 1 tablespoon olive oil
• 1 large carrot, cut into thin strips
• 1/4 mango, cut into thin strips
• 2 spring onions, cut into thin strips
• 1 red onion, cut into thin slices
• 1 tablespoon rapeseed oil
• 1 tablespoon lemon juice
• 1 cucumber
• 4 tablespoons mayonnaise
• 1 tablespoon grated Parmesan