1. In a bowl, combine warm milk, sugar, and yeast. Let it sit for 5 minutes until frothy.
2. Add melted butter, salt, and egg to the yeast mixture, then mix in flour until a dough forms.
3. Knead the dough on a floured surface for about 5 minutes until smooth.
4. Let the dough rise in a warm place for 1 hour or until doubled in size.
5. Roll out the dough into a rectangle and spread crushed cookies and cocoa powder evenly over it.
6. Roll the dough tightly and cut into slices.
7. Place the rolls in a greased baking dish and let them rise for another 30 minutes.
8. Bake in a preheated oven at 350°F (175°C) for 20-25 minutes until golden brown.
9. Mix powdered sugar and milk to create icing and drizzle over warm rolls.

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