Heat the butter in a large skillet over medium heat. Add the edamame and stir to coat evenly. Cook for 4-5 minutes, stirring often.
Add the minced garlic and crushed red pepper flakes and cook, stirring often, for 1 minute. Season with sea salt to taste, then remove from the skillet and serve. Enjoy!
Note: To eat whole edamame, put the pod into your mouth, bite down, and pull through your teeth (similar to eating an artichoke leaf); the soybeans pop out of the pod and into your mouth. Discard the pods.