Pizza can satisfy all six cube rules.This is important and relevant https://cuberule.com/ (A)
Toast. A pizza pie with toppings on top. A slice of pizza. Bread on the bottom.
Sandwich. Stack two slices of pizza on top of each other. Bread on top and bottom.
Taco. Fold the slice of pizza horizontally. Bread surrounding three sides. Left, right, bottom.
Sushi. Roll the slice of pizza. Bread surrounds it with two openings at the end.
Quiche. Deep dish pizza.
Calzone. You could have a stromboli with pizza toppings. Bread outside, toppings inside.
Cake. See sandwich but add a slice of pizza. Boom, three layers.