The dough is extremely soft and sticky, so be sure to follow the directions for the tidiest results, and make sure the butter for the filling is very soft. There are no redos in this rollup, so don’t try to unroll and roll again. If you don’t love the look of your rolls, grease and flour a cupcake tin and bake the rolls individually for single-serving deliciousness that looks and tastes great no matter what! Note: this recipe calls for dental floss for easy slicing; if you don’t have any, use a clean, sharp knife to cut the dough, wiping clean between cuts. Cinnamon rolls are best the day they’re baked but are also delicious kept covered at room temperature and enjoyed the next day. You can also freeze uncooked or cooked rolls wrapped in plastic wrap. Make Ahead: You can refrigerate unbaked cinnamon rolls, sliced and placed in their pie plate, covered in plastic wrap, the day before you want to cook them. To bake, bring them to room temperature for 30 minutes, then bake, following the recipe directions.
Make the dough: In the bowl of a stand mixer fitted with the paddle attachment, combine the yeast and sugar.
In the microwave, warm the milk to approximately 115°F. Whisk the milk into the yeast mixture and set aside in a warm spot to proof for 10 minutes.
Meanwhile, in small bowl, mix together the potato starch, brown rice flour, tapioca starch, sweet white rice flour, baking powder, baking soda, xanthan gum, and salt.
To the bowl with the yeast, add the egg, oil, and vanilla, then beat for 10 seconds on low. Continuing on low, gradually add the flour mixture. Turn the mixer to high and beat for 2 minutes more. Using a spatula, transfer the soft, sticky dough to a piece of plastic wrap, shape it into a disk, wrap, and refrigerate for at least 1 hour.
Heat the oven to 350°F. Grease and lightly flour a pie plate with olive oil and tapioca starch. Lay a 15-inch piece of plastic wrap on a clean surface. Dust the plastic wrap with 1/4 cup tapioca flour, making sure to generously cover the plastic wrapped surface.
Make the filling: In a small bowl, mix together the filling ingredients. Set aside in a warm place.