Forfar Bridies - Skinny Daily Recipes

Ingredients

• 1 lb ground beef
• 1 large onion, finely chopped
• 1 teaspoon dijon mustard
• 1 1/2 teaspoons salt
• 3/4 teaspoon black pepper
• 2 tablespoons beef or vegetable stock
• 2 tablespoons unsalted butter, cold and cut into small cubes
• 1 (16 oz) package puff pastry or 1 (14 oz) package empanada baking discs, thawed
• 1 egg white