4 pounds medium potatoes (about 8), peeled and quartered
2 cups whole milk
1 cup chopped green onions
1-1/2 teaspoons salt
1/2 teaspoon pepper
1/4 cup butter, melted
Minced fresh parsley
Crumbled cooked bacon
Place cabbage and 2 cups water in a large saucepan; bring to a boil. Reduce heat; simmer, covered, until cabbage is tender, about 10 minutes. Drain, reserving cooking liquid; keep cabbage warm in separate dish.
In same pan, combine potatoes and reserved cooking liquid. Add additional water to cover potatoes; bring to a boil. Reduce heat; cook, uncovered, until potatoes are tender, 15-20 minutes. Meanwhile, place milk, green onions, salt and pepper in a small saucepan; bring just to a boil and remove from heat.
Drain potatoes; place in a large bowl and mash. Add milk mixture; beat just until blended. Stir in cabbage. To serve, drizzle with butter; top with parsley and bacon.