Melt 6 tablespoons of butter in a large skillet.

Add the finely sliced onions to the skillet.

Cook the onions, stirring occasionally, until they become wilted.

Continue cooking the onions, stirring often, until they start to turn golden brown.

Peel the sweet, firm, ripe bananas and cut them on the bias into one-half-inch slices.

Melt 10 tablespoons of butter in a separate saucepan.

Add the sliced bananas to the saucepan.

Cook the bananas, stirring gently on occasion, until they start to turn golden brown.

Add the manioc flour to the banana mixture and stir gently to blend.

Incorporate the cooked onions into the banana and flour mixture, stirring gently.

Cook the mixture, stirring occasionally, for about 10 minutes or until the manioc flour loses its raw taste.

Add the remaining 12 tablespoons of butter and salt to taste.

Stir gently until the butter is fully blended and the farofa is ready to serve.