Prep. (Before you begin) 1 - Grate the cheddar cheese. 2 - Trim, peel and grate the onion. 3 - Finely chop the fresh chives. Getting started 1 - Fit the K beater to the machine. 2 - Line the baking tray with parchment paper. 3 - Pre heat the oven to 220ºC. Stage 1 1 - Add Ingredients 1 (breadcrumbs, cheese, onion, cream, chives, mustard, salt & pepper) into the Mixer bowl. 2 - Attach the Mixer bowl to the machine and fit the splash guard. 3 - Mix on speed 2 for 1 minute . Stage 2 1 - Add Ingredients 2 (puff pastry) to a lightly floured worksurface. 2 - Using a rolling pin, roll the dough out into a large rectangle about 2 mm thick. 3 - Cut the pastry into equal long rectangles. 4 - Place a line of filling just below the centre of the pastry. 5 - Pull the top edge over the filling to meet the bottom edge and press down. 6 - Use a fork to seal by using the prongs to press down on the edge of the pastry. 7 - Use a knife to divide into individual rolls. 8 - Place individual rolls onto the baking tray. Stage 3 1 - Brush Ingredients 3 (egg) over the rolls. 2 - Prick each roll on the top 3 times with a fork. 3 - Chill in the fridge for 20 minutes. 4 - Bake for 20 minutes at 220°C. 5 - Serve.