Creamy corn empanadas

INGREDIENTS

• 450g/1lb plain flour
• 2 tsp baking powder
• 1 tsp salt
• 60g/2¼oz butter
• 60g2¼oz lard
• 225ml/8fl oz milk
• ¼ small onion
• 2 black pepper
• 1 bay leaf
• 1 blade mace
• 2 parsley
• 15g/½oz butter
• 15g/½oz plain flour
• 100g/3½oz butter
• 3 spring onions
• ½ green pepper
• 1x340g/12oz can sweetcorn
• handful parsley
• 2 tbsp grated parmesan
• pinch of chilli powdercayenne pepper
• and freshly ground saltblack pepper
• 1 tsp caster sugar
• Vegetable oil