Dec 12, If you absolutely have to have cheese on Mexican tacos, Mozzarella's your best bet. Be advised that original, Mexican tacos have no cheese. None. Jay C. and. Have a low carb taco night with these Cheese Taco Shells made from baked cheddar cheese formed into the shape of a taco! It's an easy keto dinner recipe. Here's what you need: shredded cheddar cheese, ground beef, garlic powder, cumin, chili powder, water, salt, tomato, guacamole, greek yogurt.