Cook time: 25 minutes
Yield: Serves 4 as a side dish
4 russet potatoes (2 to 2 1/2 pounds), peeled and cut into large chunks
5-6 Tbsp unsalted butter (with more butter for serving)
3 lightly packed cups of chopped kale, cabbage, chard, or other leafy green
3 green onions (including the green onion greens), minced (about 1/2 cup)
1 cup milk or cream
1 Put the potatoes in a medium pot and cover with cold water by at least an inch. Add 2 tablespoons of salt, and bring to a boil. Boil until the potatoes are fork tender (15 to 20 minutes). Drain in a colander.
2 Return the pot to the stove and set over medium-high heat. Melt the butter in the pot and once it's hot, add the greens. Cook the greens for 3-4 minutes, or until they are wilted and have given off some of their water. Add the green onions and cook 1 minute more.
3 Pour in the milk or cream, mix well, and add the potatoes. Reduce the heat to medium. Use a fork or potato masher and mash the potatoes, mixing them up with the greens. Add salt to taste and serve hot, with a knob of butter in the center.