In a large mixing bowl, combine 2 cups of all-purpose flour, 1 teaspoon of salt, and 3 tablespoons of granulated sugar. Cut in 1 cup of cold, cubed unsalted butter until the mixture resembles coarse crumbs. Add 2 teaspoons of vanilla extract and ⅓ cup of cold water. Mix until the dough forms, then refrigerate for at least 1 hour to firm up.

Flour your surface liberally and roll out the chilled dough into a rectangle about ⅛-inch thick.

Place 1 cup of apple pie filling in a line down the center of your rolled dough. Sprinkle 1 teaspoon of ground cinnamon over the filling.

Begin folding the dough over the apple filling to form a loose oval or horseshoe shape.

Pinch the edges firmly together to seal the dough and brush with an egg wash made from 1 oz of beaten egg.

Preheat your oven to 375°F (190°C). Place the shaped kringle on a baking sheet lined with parchment paper. Bake for 25 minutes or until golden brown.

While the kringle cools, whisk together 1 cup of powdered sugar, 2 teaspoons of milk, and 1 teaspoon of vanilla extract to create a smooth glaze.

Once the kringle has cooled for about 10 minutes, drizzle the glaze generously over the top.