Preheat oven to 180ºC (350ºF).
Prepare the filling. In a small bowl whisk together granulated sweetener and ground cinnamon. Set aside for later.
In a medium bowl stir together oat flour, granulated sweetener, baking powder and pinch salt. Add Greek yogurt, melted coconut oil and mix to get a dough.
Using your hands, knead the oatmeal dough for a couple of minutes until it is soft (adjust with more oat flour if the dough is too sticky or with more Greek yogurt if it is too dry).
Roll the dough into a rectangle, brush with melted coconut oil (or preferred oil) and sprinkle the top with the cinnamon u0022sugaru0022 filling. Finally, cut the rectangle into 2 stripes (you can either form 2 separate cinnamon rolls or combine them to make a single oatmeal cinnamon roll).
Roll oatmeal cinnamon roll, pressing tight so that it doesn't fall apart. After rolling, place the cinnamon roll in a slightly greased greased ramekin or oven-safe bowl.
Bake in hot oven for 10 to 12 minutes.