Belarusian Potato Pie

Ingredients

• 3.00 cups all-purpose flour
• 1.00 cup cold butter
• 1.00 teaspoon salt
• 2.00 tablespoons sugar
• 1.00 cup cold water
• 4.00 cups mashed potatoes
• 2.00 cups shredded cheese
• 1.00 cup chopped onion
• 1.00 cup chopped bacon
• 0.25 teaspoon ground black pepper