Saute onions and peppers until soft, 5-10 minutes. Add garlic and cook for another 1-2 minutes.
Wash and then shred your cauliflower. If you don't have a food processor with a grater attachment, you can use a box grater or just break it down with a knife.
Saute your cauliflower in a bit of coconut oil for about 5 minutes and then add your spices and veggies. Cooking for another 5-10 minutes until cauliflower is soft. Enjoy in homemade taco shells!