Cook sweet potatoes until soft. Peel potatoes. Mash with 1/2 cup of water. Add eggs, 1½ cups sugar, the half and half and 1 tsp. Cinnamon Chipotle and blend well. Pour into a casserole dish and bake one hour at 350 degrees.
For the pecan topping: mix together ½ cup brown sugar, 1 tsp. Cinnamon Chipotle, ¼ cup melted margarine, ¼ cup chopped pecans and ¾ cup Rice Krispies cereal. Spread over top of baked casserole. Return to oven and broil until bubbly, watching carefully not to burn.