Reheat in an oven preheated to 150C/Gas 2 for about 8 minutes. Best served warm. To freeze, stack fully cooled muffins in an airtight container with baking parchment between the layers ...

then remove the muffins and leave on the rack for another 5 minutes before serving. Serve the muffins with sliced banana and a dollop of creme fraiche, scattered with walnuts and drizzled with ...