Cauliflower cheese tart

head cauliflower

shortcrust pastry ((1 large sheet), room temperature)

butter

plain flour, (plus more for rolling)

milk ((~ 1 2/3 cups))

gruyere cheese (or other hard cheese, grated (~ 1 cup grated))

cheddar cheese, grated ((~ 1 cup grated))

Salt

Black pepper

eggs

single cream ((~ 1/3 cup))

Small bunch fresh parsley, (roughly chopped)

cherry tomatoes, (halved)