In a large bowl, combine mince, breadcrumbs, onion, chutney/relish and thyme. Season then mix together with your hands.
Line 2 baking trays with non-stick baking paper. Cut pastry sheets in half.
Divide the mince mixture into 4 portions and shape each portion into a 25cm log. Arrange sausage logs along the centres of pastry sheets.
Brush 1 long side of the pastry with the egg. Roll up to enclose the filling. Cut each roll evenly into 5 pieces. Place rolls, seam-side down, on the lined trays.
Brush the rolls with the remaining egg and sprinkle with sesame seeds. Bake in oven for 30 minutes or until golden. Serve with the homemade tomato sauce.
For the Sauce:
Place tomatoes, vinegar, sugar and basil in a small saucepan. Season. Bring mixture to the boil then reduce to a simmer and continue to simmer until mixture has thickened. Remove from heat and allow to cool. Transfer mixture to a food processor and process until smooth.
Recipe by Hotly Spiced at http://hotlyspiced.com/sausage-rolls-with-homemade-sauce/