Wisconsin Mashed Potatoes

Directions

1. 1
   Cook potatoes and shallots in large pot of boiling salted water until potatoes are tender, about 25 minutes.
2. 2
   Drain, reserving 1 cup cooking liquid.
3. 3
   Return potato mixture to same pot.
4. 4
   Meanwhile, stir 1 1/2 cups cheese and half and half in heavy small saucepan over medium heat until smooth.
5. 5
   Add cheese mixture and cayenne to potatoes.
6. 6
   Mash until smooth and fluffy, adding enough reserved cooking liquid to thin to desired consistency.
7. 7
   Season with salt.
8. 8
   (Can be made 2 hours ahead.
9. 9
   Cover; let stand at room temperature.
10. 10
    Rewarm over low heat, stirring.)
11. 11
    Transfer to bowl.
12. 12
    Top with green onions and 1/4 cup cheese.