When I was in college the pizza place in the student union building did a loaded baked potato pizza. Slices were like 4cm tall! Russet potato, cheddar, green onions and bacon. It was the same price as the other topped pizza slices and one slice would fill me up for the day. Miss that. Never seen it anywhere else.

Boston Pizza:

Yes, back around 24 years ago I was picking my sister up from her university and went into the student union building. The pizza place inside had a pizza with potatoes, broccoli and some kind of meat. I believe it was called the Sunday dinner pizza.

Mashed potatoes on pizza is incredible and I’m being 100% serious