Kolaches

Direction :

In a small bowl, stir together yeast and sour cream. Let stand until yeast dissolves, about 10 minutes. Whisk in eggs until smooth.
In a large bowl, whisk together flour, granulated sugar, and salt. Using a pastry cutter or two knives, cut butter into dry ingredients until mixture resembles coarse meal.
Stir in yeast mixture. Knead in bowl a few times until dough is smooth and comes together. Wrap dough in plastic and flatten into a square. Refrigerate at least 30 minutes.
Preheat oven to 400°F. On a lightly floured surface, roll out dough 1/4 inch thick. Using a 3-inch square cutter, cut out squares. Transfer to two parchment-lined baking sheets, spaced about 1 1/2 inches apart.
Place 1 teaspoon jam in the center of each square. Fold upper-right corner over filling, about two-thirds of the way toward opposite corner; press down to seal. Brush lower-left corner with egg wash, then fold corner up and over first fold, pressing down to adhere. Repeat with remaining squares.