Ingredients:
Sweet potatoes: 3 lb, peeled and cut into 1.5 inch chunks. Orange-fleshed varieties like Jewel or Garnet give the creamiest texture. Japanese sweet potatoes work too but will be less sweet and more starchy.
Unsalted butter: 6 tbsp for richness. Swap vegan butter for dairy-free or use 3 tbsp butter plus 2 tbsp olive oil for a lighter feel.