Bring a large pot of salted water to a boil. Add the potatoes and cook for 20 minutes or until fork tender.
Drain the pot and set potatoes aside. Return the pot to medium/high heat and add 1/2 cup butter. Add the kale and season with salt and pepper to taste. Cook for 3 minutes. Add green onion and cook for one more additional minute, stirring.
Pour in the cream and stir to combine. Add the potatoes. Use a potato masher to mash the potatoes and mix everything together.
Season with salt and pepper to taste.
Stir in the cooked bacon crumbles.
Serve drizzled with the remaining 1/4 cup melted butter.
Boil the potatoes in salted water so you add flavor to the dish right from the beginning.
Don't over work the potatoes, this can cause them to become gluey in texture.