5 pounds russet or Yukon gold potatoes, peeled and rinsed
1 1/2 sticks regular salted butter, plus more for dotting
8 ounces cream cheese, softened
1/4 cup or so half-and-half
A splash heavy cream
Salt and black pepper
3 to 5 heads roasted garlic
Potatoes can be made 1 day ahead of time and baked the next day.