2 ¼ teaspoons active dry yeast (1 pkg)
¼ cup warm water (100 – 110 degrees F)
½ teaspoon sugar
3 ½ cups all-purpose flour
1 ¼ teaspoon kosher salt
1 cup salted butter (2 sticks), chilled, cut into tablespoon-size pieces
2 large eggs
½ cup sour cream
1 teaspoon vanilla

1 ½ cups sugar
2 teaspoons vanilla