Place the puff pastry in a tart pan and prick several times with a fork. Cut the peaches into thin wedges. Mix the almonds with the powdered sugar, melted butter, cream and egg and spread on the puff pastry base. Spread the peach wedges on top, cover with flakes of butter and sprinkle with brown sugar. Bake for 20 minutes at 210 ° C. Serve warm or cold.