01 - Thoroughly wash and dry the kale. Remove the tough stems and chop the leaves into bite-sized pieces.
02 - Heat olive oil in a large skillet over medium heat. Add the sliced garlic and cook for 1 minute until fragrant without browning.
03 - Add the chopped kale to the skillet and sauté, tossing frequently, for 3 to 4 minutes until wilted and bright green.
04 - Incorporate red pepper flakes if desired, then stir in maple syrup and apple cider vinegar. Cook for 2 to 3 minutes more until the liquid mostly evaporates and the kale becomes tender.
05 - Adjust seasoning with salt and black pepper according to taste. Serve the dish warm.