1 sheet puff pastry (9-inch square), thawed but cold
1 egg, beaten with a little water
1 teaspoon caraway seeds
2 baking potatoes (1 1/2 pounds), peeled and cut into 1/2-inch cubes
1 cup frozen peas, thawed
1/4 pound smoked black-pepper bacon, chopped
2 pounds ground beef sirloin
2 large shallots, chopped
2 small cloves garlic, chopped
2 tablespoons Worcestershire sauce
2 tablespoons butter
2 tablespoons flour
1 1/2 cups beef broth
2 tablespoons horseradish
1/2 cup heavy cream
1/4 cup chopped flat-leaf parsley
Pre-heat the oven to 425°F. Roll out the pastry into a 12-inch square. Set aside four 2-cup bowls; invert 1 bowl onto the pastry and cut out 4 rounds. Place on a parchment-paper-lined baking sheet and brush with the egg. Sprinkle with coarse salt and the caraway seeds. Bake the rounds until golden, about 12 minutes. Let cool.
In a large saucepan, add the potatoes and enough water to cover. Bring to a boil, salt the water and cook until tender, 7 minutes. Add the peas and cook for 1 minute; drain.
In a large, deep skillet, cook the bacon over medium-high heat until crisp, about 4 minutes. Drain off half the fat, add the beef to the skillet and cook, breaking up the meat, until browned, 5 minutes. Add the shallots and garlic and cook until softened, 3 minutes. Stir in the Worcestershire sauce. Make a well in the center, add the butter to melt, then whisk in the flour. Whisk in the beef broth until thickened, about 1 minute. Season with salt and pepper, then stir in the horseradish, cream and parsley; cook until thickened, 1 minute. Turn off the heat; fold in the potatoes and peas. Fill the bowls with the meat and potatoes and top with the crust.