In a large bowl, dissolve yeast and 1 tablespoon sugar into 1¾ cups lukewarm water.
Combine the oil and yeast mixture into the bowl of a stand mixer with the hook attachment or a large mixing bowl using a whisk to mix together.
Add 1/2 granulated cup sugar and 4 of the eggs (one at a time) to the mixture until well blended
Gradually stir in the flour and mix until a smooth dough is formed (about 2-3 minutes). You can also place dough on a floured surface and knead together for 5-6 minutes until smooth.
Remove the dough from the mixer and place in a large bowl coated with oil. Cover with plastic wrap, and let rise in a warm place for 1 hour, until almost doubled in size. It may need a bit longer rise time, depending on the temperature of the area the dough is placed.
Pre-heat oven to 350 degrees
Punch down the dough and roll out on a lightly floured surface into a 15"wide X 10" tall rectangle
Spread 3 tbsp softened butter evenly across the dough
Sprinkle the the brown sugar and cinnamon on top of the butter
Add the chocolate chips, making sure they are evenly spread over the top
Starting from the bottom of the dough, tightly roll up into a log shape.
Using a sharp knife, cut dough log into 2"slices, and place them flat down into the pan keeping them close together
Cover and allow to rise for 30 minutes
Sprinkle 1 tbsp melted butter and 1 tbsp granulated sugar across the tops of the rolls
Bake at 350 degrees for 16-18 minutes. Remove from the oven just as they start to turn slightly golden brown. Don't leave them in too long or they will lose the soft fluffy texture.
Allow to cool for 15 minutes and add the glaze if using
Glaze
In a small bowl, mix the milk with the powdered sugar until a thick glaze forms and pour on top of the baked rolls.