Perfect Side DishesRecipesSavory The Best Cauliflower Casserole Ever by Karen Ekstrom May 16, 2016 by Karen Ekstrom May 16, 2016 The Best Cauliflower Casserole Ever! Ingredients 1 Large Head of Cauliflower. 2 Cups Cheddar Cheese. 1/3 Cup Grated Onion. 1 Pint Sour Cream. 3/4 Teaspoon Salt. 1/2 Teaspoon Pepper. 1/3 … 0 FacebookTwitterPinterestEmail