1. Heat oven to 425°F.
2. Place 4 TATER TOTS in each of 12 muffin pan cups sprayed with cooking spray. Bake 5 min. or until thawed. Use back of spoon to press TATER TOTS onto bottom and up side of each cup.
3. Place 1 each Singles and wiener piece in each TATER TOT shell.
4. Bake 13 to 15 min. or until shells are golden brown. Cool 3 min. before removing from pan. Serve topped with ketchup and mustard.