Heat oven to 400ºF
Line a baking sheet with parchment paper
Steam cauliflower in bag according to directions or on stovetop until softened. If using whole cauliflower, process florets in food processor until resembles coarse rice and then steam.
Let cauliflower cool and squeeze out excess liquid
In a large bowl, combine cauliflower flour, riced cauliflower, cheeses, spices and salt until resembles a sticky paste.
Add egg whites and water and stir to combine. If too dry, add more water, a teaspoon at a time until resembles a thick dough.
Form into 8 patties and place on baking sheet.
Bake in center oven for 15-20 minutes until golden, flipping halfway through cooking time.