Mix flour, sugar, yeast, and salt together.
Add warm milk, melted butter, and egg.
Stir until dough forms.
Knead for 5 minutes until smooth.
The dough should feel soft and elastic.
Place dough in a greased bowl.
Cover with a kitchen towel.
Let it sit for 1 hour.
It should double in size.
This makes the rolls fluffy.
Mix Biscoff cookie butter and softened butter.
Add brown sugar and cinnamon.
Stir until well combined.
Set aside for later use.
Roll dough into a large rectangle.
Spread the Biscoff filling evenly on top.
Roll it up tightly from one end.
Cut into 12 equal pieces.
Place rolls in greased baking pan.
Cover and let rise 30 minutes.
They should puff up nicely.
This step makes them extra soft.
Preheat oven to 350°F.
Bake rolls for 25-30 minutes.
They should turn golden brown.
Your kitchen will smell amazing!
Warm Biscoff cookie butter slightly.
Mix with powdered sugar and milk.
Stir until smooth and pourable.
Drizzle over warm rolls immediately.