It definitely is! This keto casserole is full of flavor and substitutes cauliflower and spinach … Top low carb ground beef spinach recipes and other great tasting recipes with a healthy slant from Luckily, you don’t need a philosophy degree to find out if this low-carb maybe-lasagna dish is delicious. A low carb and Keto meal the whole family will love. Ground Beef and Cauliflower Rice Casserole is packed with fresh spinach, beef, and cheese, then combined with cauliflower rice and baked.