Preheat oven to 375 °F (191 °C) and line a baking sheet with parchment paper or silicone baking mats.
In a small saucepan over medium-high heat, add water, granulated sugar, granny smith apple, ground cinnamon, and nutmeg. Stir to coat well and let simmer, stirring often, for 10 minutes or until the apples are tender.
1/4 cup water, 1/4 cup granulated sugar, 1 granny smith apple, 1/4 teaspoon ground cinnamon, Pinch of ground nutmeg
Mix together cornstarch and water until no more lumps remain. Pour into apple mixture and stir to incorporate. Let mixture thicken, about 3 minutes, then remove from heat.
1 teaspoon cornstarch, 2 teaspoons water
Open the Pillsbury® crescent rolls packaging and lay the 8 triangles onto the baking sheet.
One can of crescent rolls
Using a tablespoon, spoon the filling onto the widest part of the dough then gently roll it up, pinching the sides of the dough together. It's okay if some of the filling falls out, just push it back in. Repeat for the other rolls.
Bake for 15 minutes, or until golden brown on the outside.
Remove and let cool while you make the cream cheese glaze.
In a small bowl, whisk together cream cheese, confectioners sugar, and milk.