Combine the gluten-free all-purpose flour (or regular all-purpose flour), protein powder, baking powder, and sea salt (dry ingredients) in a small bowl and stir.
Add the Greek yogurt (or full-fat canned coconut milk) and pure maple syrup.
Stir well until everything is combined and a thick, sticky dough forms. The dough will be very wet and sticky - this is normal.
Place a sheet of parchment paper on top of a cutting board or flat surface and dust generously with flour. Transfer the cinnamon roll dough to the lightly floured surface, knead it a few times into the flour until it is easy to work with, and press it into a rectangular even layer.
Stir together the coconut sugar, cinnamon, and sea salt (for the cinnamon roll filling) in a separate small bowl until well combined.
Spread the softened coconut oil evenly over the dough, then sprinkle the cinnamon sugar mixture evenly on top.
Roll the dough into a log (just like you would regular cinnamon rolls), then roll the log into a round circle. Transfer to a microwave-safe mug.
Microwave on standard high heat for 1 minute. The exact cooking time depends on your microwave, but 1 to 1.5 minutes will work perfectly in most cases.
If desired, mix up some frosting for the cinnamon roll in a bowl. You can go with a mixture of Greek yogurt or full-fat coconut milk and pure maple syrup, or make a regular powdered sugar glaze. Drizzle the frosting over the roll and enjoy!