Wash the apple thoroughly, peel it, and slice it thinly.
Melt butter in a pan, then add the apple slices and sauté.
Add sugar and cinnamon powder, and simmer on low heat.
When the apple becomes soft, finely grind the Onao and add it, then simmer for another 2–3 minutes.
Place the finished Apple Cinnamon Onao on a plate and let it cool.