A take on a potato gratin with a whole lot less fat and carbs thanks to cauliflower and egg whites. If you're looking to make it your own try out different types of cheese for the topping. I used a light cheddar but gruyere would be a great alternative!
spread cauliflower on baking sheet, spray with non-stick spray, season with salt and pepper to taste and roast for 20-30 min or until fork tender. Alternatively you can boil or steam the cauliflower until fork tender.
In a food processor or blender, add in egg, egg whites, almond milk, mustard, nutmeg, salt, pepper and half the cheese. Add in cooked cauliflower and blend until combined and smooth.
Spray a casserole dish with non-stick spray and pour cauliflower mixture into pan. Top with remaining cheese.