01 - In a large bowl, combine flour, sugar, yeast, and salt. Mix thoroughly to distribute yeast evenly.
02 - Add warm milk, warm water, melted butter, and egg to dry ingredients. Stir until a shaggy, sticky dough forms.
03 - Knead on a floured surface for 8–10 minutes, or use a stand mixer with dough hook for 6–7 minutes until smooth, elastic, and no longer sticky.
04 - Place dough in a greased bowl, cover with plastic wrap or towel, and let rise in a warm place for 1 hour until doubled in size.
05 - Punch down dough and roll out on a lightly floured surface to a 16x12-inch rectangle.
06 - Mix softened butter and Biscoff spread until creamy and well combined. Spread evenly over rolled dough, leaving a small border. Sprinkle brown sugar and cinnamon uniformly across surface.
07 - Roll up tightly from the long edge. Slice into 12 even rolls using a sharp knife or unflavored dental floss.
08 - Arrange rolls in a greased 9x13-inch baking dish. Cover and let rise for 45–60 minutes until puffy and nearly doubled.
09 - Preheat oven to 350°F.
10 - Bake rolls for 22–25 minutes until golden brown and cooked through. Center should be set when tested.
11 - Whisk melted Biscoff spread, powdered sugar, and 2 tbsp milk until smooth. Add additional milk 1 teaspoon at a time if needed for drizzling consistency.
12 - Drizzle glaze generously over warm rolls. Serve immediately while warm for best texture and flavor.