Loaded Cauliflower Casserole from Cook Once, Eat All Week

medium heads cauliflower, cut into florets

sour cream or coconut cream from the top of a can of full-fat coconut milk

salted butter, ghee, or oil of choice

coarse sea salt

ground black pepper

shredded chicken (from a rotisserie chicken or about 1 ½ pounds chicken breast)

shredded cheddar cheese

strips bacon, cooked and sliced or crumbled (from Prep Day)

sliced green onions, for garnish