Dissolve yeast in warm milk and let sit for 5-10 minutes until frothy. Combine melted butter, sugar, and egg, then mix in yeast mixture. Gradually add flour until a soft dough forms.

Knead dough on a floured surface for 5-7 minutes, then place in a greased bowl, cover, and let rise for 1-2 hours until doubled.

Mix sugar and cinnamon for the filling and set aside.

Roll out the dough into a rectangle about ¼ inch thick. Spread butter over it and sprinkle cinnamon-sugar mixture.

Cut dough into strips, twist each strip, and place on a parchment-lined baking sheet.

Cover twists and let rise for another 30 minutes.

Preheat oven to 350°F. Brush with egg wash and bake for 15-20 minutes until golden brown.

Cool on wire rack for 10 minutes before serving.