Rhubarb Pie - Baking Bliss

Ingredients

• 2 cups all-purpose flour
• 1 tablespoon sugar
• 1 teaspoon salt
• 1 cup unsalted butter, cold and cubed
• ¼ cup ice water
• 4 cups rhubarb, chopped
• 1 ½ cups sugar
• ¼ cup cornstarch
• 1 tablespoon lemon juice
• 1 tablespoon butter, cut into small pieces
• 1 large egg (for egg wash)
• Sugar for sprinkling