Piroshki Burgers....Oh Yeah!! - cooking recipe

Ingredients

Dough
6 cups plain flour
1 tablespoon dry yeast
1 tablespoon salt
1/3 cup sugar
2 egg yolks
2 cups milk, warmed
1 cup melted butter
1 egg, beaten lightly
Filling
1 tablespoon olive oil
1 medium brown onion, chopped finely
1 garlic clove, crushed
1 cup potato, peeled and chopped finely
4 slices bacon, rind removed chopped finely (canadian or aussie style)
1 lb ground beef
1/3 cup tomato paste
2 teaspoons fresh thyme leaves
1 cup shredded cheddar cheese

Preparation

Combine flour, yeast, salt and sugar in large bowl. Make a well in the centre; using hand, mix in egg yolks, milk and butter until mixture is soft and elastic. Scrape down sides of bowl, cover; stand in warm place about 1 hour or until dough doubles in size.
Meanwhile make the filling. Heat oil in large frying pan; cook onion, garlic, potato and bacon, stirring, until potato softens. Add beef; cook, stirring, until changed in colour. Stir in paste and thyme. cool 10 minutes before filling.
Turn dough onto floured surface;knead until smooth. Divide dough into 16 pieces;press each piece into 12cm round.
Preheat oven to 180c/350f. Lightly oil two oven trays.
Place rounded tablespoon of the filling in centre of each round and a pinch of chedder cheese (optional); gather edges, pinch firmly to enclose filling. Place piroshki, pinched-side down, on prepared trays; brush with egg. Stand, uncovered, in warm place 15 minutes.
Bake, uncovered, in hot oven about 20-25 minutes or until golden brown.