"This is a famous Scottish tart...If you use the small purple plums, increase the number to 12." Preheat the oven to 180ºC . Arrange the plums in the pie shell, skin side up. In a bowl, beat together, cream, eggs and egg yolk, lemon juice, granulated sugar and 1 tsp cinnamon. Pour over the plums. Bake for 25 minutes or until the plums are softened. Mix together the brown sugar and the remaining 1 tsp cinnamon. Sprinkle over the tart. Return to the oven and bake for a further 10 minutes or until crusty. Serve warm. SERVES:6