Grease a frying pan with a tablespoon of butter and put it over medium-low heat.
Slice 2 bananas lengthwise
When the butter starts to foam and sizzle a little, put the plantains with the cut side down. Let them cook for 12 minutes.
When the 12 minutes are up (it starts to smell good!), add orange juice until it covers half of the bananas. Then add 1 tablespoon of sugar per banana, and soak the banana loin with the juice from the pan. Let the sauce cook for 25 minutes over medium heat.
When you see that the sauce has thickened , it´s time to remove it from the heat. Et voilà! You have just made delicious fried plantains with orange sauce.