Wash the blueberries thoroughly and remove any excess water.
In a small bowl, add Ona and whisk gently until smooth.
Melt butter in a pan and pour in the Ona, spreading it as thinly as possible.
When the Ona is half cooked, evenly place the blueberries on top.
Cook on low heat without flipping until the Ona is fully cooked.
Transfer the finished Onao Blueberry to a plate.