Pre-made pizza dough or your favorite homemade pizza or bread dough
2 cups Trader Joe’s shredded Swiss and gruyere cheese, plus extra for topping each khachapuri
8 ounces feta, crumbled
1 whole egg
Splash of brine from feta or milk
2 cloves garlic, minced
Dash black pepper
2 egg yolks, plus little bit of the whites
2 tablespoons butter, room temperature
Red pepper flakes
Preheat the oven to 500º, preheat pizza stone or up turned cookie sheet.
Lightly oil a bowl. Place the dough in the bowl, cover with plastic or cloth and place in a warm place until doubled in size, about 1 to 1 ½ hours. Lightly flour your work surface. Punch down and divide the dough in half. Form into rounds. Keep covered and let rest for 20 minutes while you prepare the filling.
For the filling:
Combine the cheeses and whole egg. Add a splash of feta brine or milk so that the cheese just forms a paste.
Forming the khachapuri:
On a piece of lightly floured parchment paper, roll one piece of dough into a 10” to 12” oval about ⅛” thick, it doesn’t need to be exact. Spread half of the cheese mixture over the dough, leaving a ½” border all the way around. Roll one of the long sides of the dough toward the center so it overlaps with the cheese a bit. Repeat on the opposite side. Pinch the two narrow ends of the rolls together and twist twice to seal, making a boat shape. Top with a generous handful of grated mozzarella. Repeat with the other half of the dough. Brush the dough with egg wash.
With a pizza peel, transfer the bread to the hot stone. Cook until the cheese mixture is hot and bubbly and the dough golden brown, about 9 to 10 minutes. Remove from the oven. Using a fork, make a small well for the egg yolk. Pour the egg yolk with a little bit of the egg white into the well. Place back into the oven and cook another 2 to 3 minutes, until the cheese is bubbly.
Remove from the oven and add a tablespoon of butter. While still hot, take a fork and swirl the cheese, yolk and butter together. Sprinkle with red pepper flakes. Tear off a piece of bread and scoop up some of the molten cheese.