My Mom use to make these and OMG they were so   good...
  I have no idea where she got this recipe, but   they takes just like the  Czech ladies that lived down rthe street   from us :)
   
        1        C             warm   water
  
    2        Pkgs          dry yeast
  
      1/2    C               sugar
  
      1/2    Tsp           salt
  
    1        C               butter
  
    1        C             cold   water
  
      2                      eggs
  
    6        C               flour
  
                           Fillings (see below)
 
     Place 1 c. warm water   in large bowl (Tupperware is best); 
   
  add yeast,
  
 sugar, and salt.     Melt butter   in pan. When melted add 1 c. 
   
  cold water
  
 and pour into yeast solution. Add eggs; mix well.   Add 2 c. flour;
   
   mix
  
 well and then add 4 more cups flour, beating well   after each 
   
  cup. Cover
  
 bowl tightly and place in refrigerator overnight or   at least 4 - 5
   hours.     Grease cookie sheets.   Roll dough into walnut-sized 
   
  balls.
   Place on prepared cookie sheet 1 inch apart. Grease the   tops
   
   of the
   balls and let raise in a warm place until double in   size.     When
   
   balls
  
 have risen; make indentation in middle and fill with   about a 
   
  teaspoon of
  
 filling. Let raise until spongy, about 20   minutes.     Bake at 
   
  425F for
  
 5 - 6 minutes or until lightly browned. Kolaches may   be 
   
  sprinkled with
  
 powdered sugar after removing from   oven.
  
 
Fillings
   
       These are the traditional fillings   for kolaches.
  
Poppyseed Filling:       Bring to a boil 2 c. of milk or water. Stir in
   1/2 lb. ground poppyseed. Let simmer 20   min., stirring 
   
  frequently. Add
  
 3/4 c. suger, 1 TBS. white corn syrup, and 1/4 tsp.   salt.
   Simmer a few
  
 minutes longer. Remove from heat and add 1/2 tsp.   almond 
   
  extract, 2 TBS.
  
 butter, 1 tps. vanilla, and 2 crushed graham   crackers.
Prune Filling:     Cook 1 lb. dried prunes   until soft. Drain; 
   
  remove
  
 pits. Mash and add 1/2 c. sugar, 1/2 tsp. cinnamon   and a little
   
  vanilla.
  
Apricot Filling:     Soak 1 pkg. dried   apricots overnight in water, just
  
 enough to cover. Cook until soft; if any water   remains, drain 
   
  well.
  
 Mash, adding sugar to   taste.