Step 1

Heat oven to 400ºF. Bake potatoes 1 hr. or until tender. Cool 5 min.

Step 2

Cut off top 1/3 of each potato. Scoop flesh from bottoms and tops into bowl, reserving 8 bottoms.

Step 3

Mash until very smooth; stir in sour cream, cheese, egg, 1 tsp. thyme, salt and pepper. Transfer to pastry bag fitted with large star tip.

Step 4

Arrange potato bottoms on baking sheet; pipe in mashed potato mixture. Lightly coat tops of potatoes with cooking spray.

Step 5

Bake 20 min. until heated through and thermometer inserted into centers registers 160°F.

Step 6

If desired, broil 1 min. Sprinkle with remaining thyme.