Preheat the oven to 400oF.
Sprinkle the flour on your work surface and unfold the pastry sheet. Spread the sheet with marmalade and top with 1/2 cup of the Treasure Cave® Crumbled Blue Cheese, cranberries, walnuts and rosemary. Then, roll it up like a jellyroll and lightly brush the edge with some beaten egg. Press the edges to seal it and cut it into 20 1/2-inch slices.
Place the slices, cut-side down onto parchment-lined baking sheets. Brush the slices with the egg mixture and sprinkle evenly with the remaining Treasure Cave® Crumbled Blue Cheese.
Bake for 15 minutes or until golden. Then, let them cool on wire racks for 10 minutes.