In a large lidded saucepan or dutch oven heat the oil. Saute onion, and carrots until fragrant and starting to brown.
Add mince, salt and the mexican seasoning spices, including the optional chili flakes cook until browned.
Take 1 can of tomatoes and the spinach, blend them in a blender, i.e. make a savory smoothie with them, (yes it will look gross but trust me).
Add the smoothie to the browned mince, along with the seond can of tomatoes, rice and water/stock. Stir
Cover and gently simmer for 15 minutes (make sure you reduce the heat).
Add the corn
Cover and simmer for another 5-10 mins, liquid should be absorbed and rice tender