Spray one 8" or 9" round cake pan or pie plate lightly with cooking spray then line with parchment (makes it easier to remove the rolls). Bring all ingredients to room temperature. In a large mixing bowl, whisk together dry ingredients: gfJules Flour; yeast granules**; sugar; potato flakes; and salt.
In a separate bowl, stir egg to mix. Add to it liquid ingredient*, olive oil and apple cider vinegar, then pour into the dry mixture while stirring or using the paddle attachment on a stand mixer at low speed.
Increase mixing speed to medium and continue stirring for 2-3 minutes. The dough will become fluffier but will still be thick.
Using a 2 inch scoop, place 8-9 dough balls into the prepared pan: one or two in the middle of the pan and the others evenly spaced around it. I find it is easier to remove the dough smoothly if you first wet the scoop with water or oil well before filling with dough. OR roll each ball gently in more gfJules Gluten Free Flour first. If needed, dip your fingertips or a rubber spatula into warm water and smooth the tops of the rolls, continuing to re-wet as needed so the dough doesn't stick to the spatula or your fingers.
Cover lightly with parchment paper and allow to rise for 20 minutes. If your kitchen is cool, a good place to rise these is to turn your oven on to 200ºF and then turn it off when it has come to temperature. Place the rolls in the oven after it is turned off.
Remove the rolls after rising in order to preheat the oven to 450°F. Brush rolls with 1 tablespoon of melted butter.
Once the oven has come to temperature, place the rolls (uncovered) into the oven and reduce the oven temperature to 325°F convection. If your oven doesn't have convection, use 350℉ -- the rolls will not be as browned.
Bake for approximately 20-22 minutes. The tops of the rolls should be golden, a toothpick inserted into a roll should come out with only dry crumbs, and the internal temperature of the dough should be 195°F or higher.
Once fully cooked, remove rolls to cool in the pan on a wire rack, and gently brush on remaining 1 tablespoon melted butter just before serving. Serve warm.