Cinnamon Apple Dumplings with Rich Sauce

Preheat your oven to 425 degrees Fahrenheit, ensuring it reaches the optimal temperature. Position the rack in the middle section of the oven for even cooking.

Cover a large baking dish, measuring at least 18 by 12 inches in size, with parchment paper to prevent sticking.

Mix together 3 tablespoons of softened butter, 1/2 cup of brown sugar, and a pinch of cinnamon in a small bowl. Add some chopped nuts to the mixture for added texture. Spoon a portion of this mixture into each hollowed-out apple core.

Unroll one sheet of dough onto a lightly floured surface, smoothing out any wrinkles. Use your fingers to straighten the edges and roll it into a rough 12-inch square shape. Cut this dough into four equal squares, each measuring 6 inches in size. Brush the edges of each square with a small amount of egg white to help them stick together. Place an apple half on top of each square, bringing the four corners together to form a seal by pinching the edges. Place these sealed apple halves in the prepared baking dish. Brush the tops and sides of each dumpling with a small amount of egg white, then sprinkle with some granulated sugar. Repeat this process for the remaining apples and dough.

Place these dumplings in the preheated oven, where they will bake until the pastry is set and golden brown, approximately 10 minutes. Reduce the oven heat to 375 degrees Fahrenheit and continue baking until golden brown, approximately 20 minutes longer.

Simultaneously, combine 1 cup of water, the remaining 2 tablespoons of butter, the remaining 1/2 cup of brown sugar, and a pinch of cinnamon in a small saucepan over medium heat. Bring this mixture to a boil, then whisk in 2 teaspoons of cornstarch dissolved in 2 teaspoons of water to create a smooth sauce. Cover the pan and keep the sauce warm.

Serve the apple dumplings by spooning a portion of the warm sauce onto a dessert plate, followed by placing an apple dumpling on top and serving immediately.