3-2/3 cup (880 ml) (17-2/3 oz) (500 gm) all-purpose (plain) flour (use semi-coarse grounded if you can find in your store)
¾ cup (180 ml) (3½ oz) (100 gm) confectioner’s (icing) sugar
1 cup (250 ml) milk, warm
1/3 cup (80 ml) (2-2/3 oz) (75 gm) butter, melted
30 gm (1 oz) fresh yeast or 2 packets (4 teaspoons) (½ oz) (15 gm) active day yeast
pinch of salt
2 small egg yolks
for quark filling
3 cups (1-2/3 lb) (750 gm) quark
1 small egg yolk
confectioner’s (icing) sugar to taste
For Jam filling:
2/3 cup (160 ml) (7 oz) (200 gm) plum jam
rum or hot water to soften jam if too thick
For Streusel topping:
1/3 cup (1¾ oz) (50 gm) plain flour
¼ cup (60 ml) (1¾ oz) (50 gm) butter, chilled and diced
¼ cup (60 ml) (1¾ oz) (50 gm) caster (or granulated) sugar
(in fact I don’t know the exact amount I used because I always make larger batch and store it in the freezer)
3 T melted butter or eggwash
In a bowl mix together yeast and 1 teaspoon sugar. Add 4 tablespoons (¼ cup) warm milk, mix well and sprinkle with 1 tablespoon flour. Cover with plastic wrap and let rest for 10 – 15 minutes.
In a bowl of your electric mixer (or in a large bowl) mix flour, sugar, salt, egg yolks, butter, milk and leavened yeast. Knead with dough hook (or with wooden spoon) on low speed for about 10 minutes. Cover with plastic wrap and let rise for about one hour to double its volume.
Meanwhile prepare quark filling – just mix all ingredients – and plum filling – mix plum jam with rum or water to soften it. Set aside.
Prepare streusel topping. In a medium bowl, mix together sugar, flour and cinnamon. Add cold butter diced in small cubes and with your fingers, mix all ingredients until crumbly.
When the dough has risen, turn it onto a lightly floured surface and roll it with rolling pin to a thickness of about 2 cm (¾ inch). Cut with 10cm (4 inch) cookie cutter or just with a glass (if you want small kolaches) or divide the dough into 10 equal pieces (if you want large kolaches). Splat each piece with your hands and fill with quark filling. Wrap it into a “purse” shape.
Preheat oven to moderate 340°F/170°C/gas mark 3.
Line 2 – 3 baking sheets with parchment paper. Put each kolach onto a prepared baking sheet with seam down. Press each kolach in the middle as you can see on the picture below. Brush it with egg wash and fill holes with plum filling. Sprinkle it with streusel topping.
Bake for about 20 minutes to golden brown. Cool on rack for a few minutes and eat warm.
Kolaches are best eaten within two days on baking.