Put a large pot over a medium heat and add the oil.
Once the oil is heated add the onion and half of the garlic. Cook for 5 minutes.
Add the beef and cook until well browned. Stirring frequently.
Add the tomatoes, kidney beans, pepper flakes, paprika and cayenne. Stir well.
Turn the heat to low and cook for 20 minutes. The sauce should have thickened by this time.
Turn off the heat add the spinach and stir in.
Cover and let sit for 1-2 hours.
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