Just type pizza into the search and you will find the specific recipe.
Its Smash type potato, made with a little hot water till it all binds together but as dry as possible. Flaten it out on a fry light baking tray and cook on high for 15 mins, then flip it over and put passata, peppers, onions, any free food really with HE cheese. Its really nice, Tuna, Onion, Mushroom, Tomato and Pepper is my favourite, with chilli flakes.