01 -
Combine warm milk, active dry yeast, and 1 teaspoon sugar in a bowl. Let stand for 5 to 10 minutes until foamy.
02 -
In a large bowl, mix flour, granulated sugar, and salt. Add yeast mixture, melted butter, and egg; knead until smooth and elastic. Cover and let rise until doubled, about 1 hour.
03 -
Beat softened cream cheese, granulated sugar, and egg yolk until smooth. Stir in diced apples and cinnamon.
04 -
Combine flour, brown sugar, and cold butter. Rub with fingers until mixture forms coarse crumbs. Set aside.
05 -
Punch down dough and divide into 8 equal portions. Flatten each into a disk, place filling in center, and fold edges over to seal.
06 -
Place buns seam side down on parchment-lined baking sheet. Sprinkle crumble topping evenly over buns. Bake at 350°F for 20 to 25 minutes until golden brown.
07 -
Whisk powdered sugar, milk, and vanilla extract until smooth.
08 -
Drizzle glaze over warm buns. Allow to cool slightly before serving.