• 1 red onion, finely chopped
• 1 x 485g pack chestnut mushrooms, finely sliced
• 2 garlic cloves, finely chopped
• 50g Dolcelatte blue cheese
• 45g walnuts, bashed into a fine rubble/finely chopped
• 1 x 375g pack ready-rolled puff pastry
• 1 x 300g pack steamed beetroots (4-5 whole beetroot), halved if very large