1. place carrots and sweet potatoes in a saucepan. Cover completely with water, and bring to a boil. Let simmer, uncovered, for 10-15 minutes, until carrots and sweet potatoes are tender when pierced with a fork.
2. Drain, and return vegetables to the pot. Add 2 tablespoons of the butter and the remaining ingredients. Mash well. Serve warm, topped with remaining tablespoon of butter. this amazing Delicious great well made fun food for everyone cheerer upper, is just really good.<------- that's all i can say... try it  only ingredients you will need are Carrots, Sweet Potatoes, and butter. optional ingredients are milk salt and pepper i would recommend milk though. if you do use milk add it in when you are mashing so it mixes in well.         Samuel Westing.