Preheat the oven to 220/200. Roll the dough on a lightly floured surface. Smear the dough with mashed potatoes, spice the sausages and mushrooms, add bacon, then bake for 20 minutes at the top of the oven. Take the pizza from the oven and break it into 4 eggs. Return to the oven and cook for another 5 minutes or more, depending on how ready you like the eggs.