Mini lamb pizza with yoghurt and raisins

Ingredients

• 2 teaspoon olive oil
• 1 onion, finely sliced
• 2 clove garlic, crushed
• 1/2 teaspoon ground cumin
• 1/2 teaspoon ground coriander
• 500 gram lean lamb mince
• 1/4 cup (40g) raisins
• 1 cup (300g) greek yoghurt
• 4 wholemeal pocket pita breads
• mint leaves, to serve
• lemon wedges, to serve