Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   8      large         sweet potatoes -- scrubbed
   2      canned        chipotle chilies in adobo sauce,
                        minced and mashed to a paste
   3      tablespoons   unsalted butter, cut and softened

Preparation:

Preheat oven to 450F. and line a baking sheet with foil. Prick potatoes and bake in middle of oven 1 to 1 1/2 hours, or until very soft. Cool potatoes until they can be handled and scoop flesh into a bowl. With an electric mixer beat potatoes with chili paste, butter, and salt and pepper to taste just until smooth and spread in a buttered 2-quart shallow baking dish. Potatoes may be prepared up to this point 1 day ahead and chilled, covered. Bring potatoes to room temperature before proceeding. Reduce oven temperature to 350F. Bake potatoes in middle of oven until hot, 20 to 25 minutes.