Place potatoes in a large saucepan and cover with water. Bring to a boil. Reduce heat; cover and cook for 15-20 minutes or until tender.
Meanwhile, place 1/2 in. of water and brussels sprouts in a small saucepan; bring to a boil. Reduce heat; cover and cook for 5 minutes. Add garlic; cook 3-5 minutes longer or until tender.
Drain potatoes, sprouts and garlic; cool slightly. Place in a food processor; cover and process for 1-2 minutes. Add the remaining ingredients; cover and process just until blended. Transfer to a serving bowl. Yield: 6-8 servings.