Proof the yeast in the warm milk for 10-15 minutes or until bubbly. Whisk in the sugar, butter, salt and egg. Stir in the flour until the dough comes together.
Knead the dough on a floured surface for a few minutes until it is smooth and elastic. Place in a greased bowl and let rise until double in size.
Punch the dough down and need a few times until smooth. Combine the ½ cup brown sugar and 1 tablespoon cinnamon.
Make the Pecan topping by combining the brown sugar, corn syrup and butter in a small saucepan. Heat until almost boiling and the sugar is melted. Pour the mixture into a greased 10-inch round baking pan and sprinkle with pecans. Set aside
Roll the dough into a 10 by 18-inch rectangle. Spread the 4 tablespoons of butter on the dough. Sprinkle with the cinnamon sugar mixture. Roll up tightly starting on the short edge.
Using thread or a very sharp knife, cut the log into 8 or 9 rolls. Place them on top of the pecan filling in the baking pan and let them rise. Preheat the oven to 375°F and bake for 15-16 minutes or until lightly browned.
Remove them from the oven and let them sit for a minute. Invert the pan on a foiled-lined tray. Be careful, the caramel is very hot. They are best served warm.