In bowl of a stand mixer fitted with paddle attachment, combine 1 1/2 cups flour, 1/4 cup sugar and salt.
In a sauce pan melt your butter and milk together and set aside to cool to 110 degrees then stir in your yeas and let proof for 5-10 minutes.
Once yeast has proofed add your milk and butter mixture along with your egg to flour mix and with dough hook attachment combine, adding 1/2 cup flour at a time until dough starts to pull away from bowl.
Once combined add to large bowl greased with non-stick cooking spray and let rise in warm place until doubled in size, about 1 hour.
Meanwhile spray a 9"x13" baking pan with non-stick cooking spray.
In small bowl, combine butter, brown sugar and corn syrup until blended and spread mixture evenly into pan and spread until bottom is covered, sprinkle with salt.
Once dough has risen punch it down and dump out onto lightly floured surface and roll dough into about a 15"x12" rectangle.
Spread with butter and in small bowl, combine sugar and cinnamon then sprinkle evenly over dough and sprinkle with sea salt.
Starting with longer side side, roll up tightly and cut into 12 equal slices and place into pan on top of caramel mixture.
Cover and let rise again until double in size, about an hour.
Once your rolls have risen for a second time preheat your oven to 375 and bake rolls for about 20-25 minutes or until lightly golden.
Remove from oven and let rest for a minute before turning onto serving tray or baking sheet.
Sprinkle with additional sea salt and enjoy.