Preheat oven to 200°C (180°C fan-forced). Line a large oven tray with baking paper.
Cut pastry sheets into quarters, place on prepared tray. Place 2 tsp of chutney in the centre of pastry squares. Place sausages diagonally on pastry. Fold up two opposite pastry corners, overlapping in the middle; pressing to secure. Brush pastry with a little egg, top with sage.
Bake 20 minutes or until puffed, golden and heated through. Serve with remaining chutney.