Combine all ingredients in the slow cooker except for spinach and yogurt. Cook on low heat for 6 hours.
With 10 minutes to go, stir ingredients and turn slow cooker up to high, then add spinach and Greek yogurt.
Serve with additional topped coriander, shaved almonds, & Greek yogurt on cauliflower rice.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.