Cheese and Marmite Pastry Pinwheels

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.