300gboiled and mashed potatoesor you can use any leftover mash from a previous meal
150ggrated or crumbled cheeseyou can use any firm cheese (hard or semi-hard cheese like cheddar, Monterey Jack, etc.)
1large egg
For the topping:
150mltomato sauceI used a store-bought one with added basil
200gdiced or grated mozzarella cheese
Fresh basil
A few cherry tomatoescut in half
Any other toppings you desire
Instructions
Mix the mashed potatoes with the egg and grated cheese until smooth.
Stretch the "dough" in a baking pan lined with parchment paper. The mass should be about 1cm ( ~1/3 inch) thick.
Bake for 25 minutes at 220 ºC/ 430 °F or until it becomes firm with a golden-brown crust. It should look like the one in the pictures below.
After baking, remove the crust from the oven and spread the tomato sauce on top, add the mozzarella, tomatoes and basil. You can now add any other toppings you like.
Bake for another 10-15 minutes at 220 ºC/ 430 °F or until the cheese has melted.
Allow it to cool slightly for 5-10 minutes before slicing as the base will still be soft and slightly crumbly when hot.