Sausage and Onion Marmalade Sandwich

1. To make onion marmalade, heat oil and butter in a frying pan over a medium-low heat. Add onion and cook for 20 minutes, or until soft. Add maple syrup and vinegar. Reduce heat to low and cook, stirring, for 10 minutes, or until caramelised. Set aside to cool.

2. Combine garlic, rosemary, lemon rind, 2 tablespoons juice, 1 tablespoon oil, salt and pepper in a non-metallic dish. Add sausages and turn to coat. Cover and refrigerate for 1 hour to marinate.

3. Preheat lightly oiled barbecue grill or flat plate on medium until hot. Remove sausages from marinade, discard marinade. Barbecue sausages, turning occasionally, for 8-10 minutes or until cooked through. Transfer to a plate and cover to keep warm.

4. Brush both sides of pita bread with remaining oil and barbecue for 1-2 minutes each side until warmed through. Spoon onion marmalade onto warm bread. Thickly slice sausages and put on top of marmalade. Serve drizzled with sweet chilli sauce and sprinkled with parsley.