I enjoy making these using left over shortcrust pastry, I enjoy eating them even more. I roll the pastry into a thin rectangle, spread in quite thickly with Marmite, then sprinke strong grated cheese over the Marmite. I roll up the rectangle and cut it into pinwheels. Place the pinwheels on a baking tin and sprinkle with more grated cheese. You can also add seeds of your choice at this stage too, I like pumpkin and sunflower seeds. Bake in a medium oven for 15 - 20 minutes. They don't hang about for long.