Potato Rolls

1 pkg dry yeast
¼ cup warm water
1 cup instant mashed potatoes, prepared
6 T. butter
¼ cup sugar
1 tsp. salt
¾ cup milk
1 egg
3 ¾ cup flour

Combine yeast and warm water. Set aside.  Mix freshly mixed potatoes (still warm), butter, sugar, salt, milk and egg; stir.  Add 2 cups flour and mix well.  Add 1 ¾ cups flour and mix in with floured hands until smooth.  Cover bowl and let rise 1 hour.  Stir down and let rest 10 minutes.  Now, either cover with damp cloth and refrigerate until ready to use (up to 1 week) or do the following for immediate use:  shape into 1 ½ inch balls with floured finger and place in greased pan, leaving a little space between rolls for rising.  Let rise 45 minutes to 1 hour, to desired size.  Bake at 400 degrees for 12 minutes.