Place a large frying pan over medium/low heat. Add oil, garlic and chili pepper flakes. Cook until garlic and chili flakes just start to become fragant and just begin to bubble.
Working in batches, add in 1/3 of spinach and sauté until just wilted. Continue with the process until all spinach has been added and cook just until last batch is wilted.
Take off heat and stir in parmesan cheese. Salt and pepper to taste.
Notes
*Please use as many organic ingredients as possible.**See above notes in post for tips to lower calories.