preheat oven to 350. Coat a rectangular baking dish w nonstick spray. Cut potatoes into 1 in. pieces. In a large pot or Dutch oven, place potatoes in salted boiling water to cover. Cook 10-15 minutes, or til tender. Drain, return potatoes to pot.
Add cream cheese, sour cream, butter, chives, onion & garlic powder to potatoes. With a large wooden spoon mash potatoes slightly & stir untin well combined. Season w salt to taste.
Spoon potato mixture into baking dish. Sprinkle w cheese & bacon bits. Bake, uncovered, 25 minutes.