Mix the batter: In a microwave-safe mug, whisk together oil, almond flour, egg, vanilla, cinnamon, baking powder, and monk fruit until smooth. The mixture should look like slightly thick pancake batter.
Microwave: Place the mug in the microwave and cook on high for 90 seconds. Cooking time may vary by microwave wattage, so check for doneness — the cake should spring back lightly when touched.
Release and plate: Run a butter knife gently around the edges, then invert the mug onto a plate. The cake should slide out easily.
Make the glaze: Using the same mug (no need to clean it), add cream cheese and water. Microwave for 20–25 seconds until soft, then stir until smooth.
Drizzle and enjoy: Pour the glaze over your warm cinnamon roll cake and sprinkle with a touch of cinnamon. Serve immediately for that gooey, just-baked magic.