Homemade Donuts with Maple Glaze

Donuts:
1 cup mashed potatoes
1 1/2 teaspoons salt
1 cup sugar
3 tablespoons yeast
6-7 cups flour
3 eggs, beaten
1/2 cup butter
2 cups milk
1/2 cup warm water

 Over medium heat, Cook butter, sugar and milk until butter is melted.  Let's cool to lukewarm. In a small bowl, dissolve yeast in warm water. Let sit for 5 minutes.   In a large mixing bowl, add lukewarm milk mixture to eggs.  Add salt, mashed potatoes, yeast mixture, and half the flour; mix well.   Add remaining flour; mix well.  Dough should be smooth and elastic; knead for 5 minutes.  Place in greased bowl, cover and let rise, about 1 hour.  Lightly dust countertop with flour.  Roll out and cut with a donut cutter. Let rise again, about 20 minutes.  Put oil in fryer, heat to 375.   Cook donuts in oil,  turning when each side is brown. Remove from oil, and let drain on paper towel.  Dip in a bowl of sugar or glaze while hot.

Glaze:
1 pound powdered sugar
1 teaspoon of maple flavoring
1 tablespoon of butter, softened
1/3 cup warm water

 Mix above ingredients in a medium mixing bowl.  Dip donuts in glaze while hot.  Put on cooling rack with foil underneath to catch excess drips.