Activate the YeastStir the yeast into the warm water and let it sit for 5 minutes until foamy.
Mix the Dough BaseIn a large bowl, combine the yeast mixture, ¼ cup sugar, 6 tablespoons melted butter, eggs, sour cream, and salt. Mix until smooth.
Add the FlourGradually add 2 cups of flour, mixing until smooth. Add the remaining flour a little at a time until a soft dough forms.
Knead the DoughTransfer the dough to a floured surface and knead for about 5 minutes, or until smooth and elastic.
First RisePlace the dough in a greased bowl, turn to coat, cover, and let rise for 1½ hours or until doubled in size.
Prepare the FillingCombine the orange zest and remaining ¾ cup sugar in a small bowl.
Shape the RollsGrease a 9×13-inch baking pan. Punch down the dough and divide it into two halves.Roll one half into a 12-inch circle.Brush with 1 tablespoon melted butter.Sprinkle with half the orange-sugar mixture.Cut into 12 wedges and roll each from the wide end toward the tip.Place point-down in the pan.Repeat with remaining dough.
Second RiseCover and let rise for 1 hour, or until nearly doubled.
BakePreheat oven to 350°F. Bake rolls for 22 minutes, rotating the pan halfway through.
Make the GlazeIn a saucepan, combine sugar, sour cream, butter, orange juice, and a pinch of salt. Bring to a gentle boil and cook for 3 minutes, stirring constantly.
Glaze the RollsPour the warm glaze evenly over the hot rolls, covering every nook and swirl.
Notes
Freshly grated orange zest delivers the best flavor.
Keep the glaze warm—cool glaze thickens quickly.
Rising time can vary depending on room temperature.