In a large pot of boiling water, blanch long beans for 2 minutes until slightly tender. Allow to cool.
In a large skillet over medium-high heat, add butter. Add scallions, ginger and garlic. Mix together. Add red pepper flakes and long beans. Allow to cook for a few minutes. Stir in chicken stock, honey and sesame oil. Season with salt and pepper, to taste, and add sesame seeds, if desired. Mix together.