Step 1

Preheat the oven to 350° and set an oven rack in the middle position. Line a large rimmed baking sheet with foil. Prick each potato several times with a fork and transfer to the baking sheet. Bake the potatoes until tender, 60 to 75 minutes; turn the potatoes over halfway through baking. Let cool slightly, then peel the potatoes and discard the skins.

Step 2

Melt the butter in a medium saucepan over medium heat. Add the half & half, chipotle peppers, chipotle sauce, and salt and bring to a simmer. Off the heat, add the sweet potatoes and cheddar. Using a potato masher, a fork, or an electric mixer on low speed, mash the potatoes until coarsely puréed. Taste and adjust seasoning if necessary. Serve warm.

Step 3

Make Ahead: This dish can be made entirely ahead of time and reheated on the stovetop before serving. Add a little milk or half & half when reheating to thin the potatoes out if necessary. You may also bake the sweet potatoes ahead of time and refrigerate until ready to proceed with the recipe.