Preheat oven to 400 degrees F. Make pastry and chill 30 minutes.
In large heavy saucepan combine molasses, sugar, flour, apples, cranberries, spices, lemon peel and 3 tablespoons of butter. Bring to boil and simmer 15 minutes, stirring occasionally, or until apples are softened. Transfer to a 2-quart baking dish and dot with butter.
On a lightly floured surface roll out pastry into a round about 1/8-inch thick and trim it so that it will just fit inside the baking dish. Cover fruit with pastry, brush with cream and sprinkle with sugar. With the point of a small sharp knife cut three steam vents in the center of the crust. Bake for 25 to 30 minutes, or until golden brown.
Remove baking dish from oven and with a sharp knife cut the crust and fruit into 2-inch pieces, pushing crust into fruit with back of a spatula so that juices bubble up over top of crust. Bake 15 minutes more. Serve warm with cream.