Peel bananas and brush with unsalted melted butter. Grill 2 minutes per side. Serve with your favorite ice cream.
General fruit principals:
Start with a clean grill that has been preheated.
Have the washed and blotted dry fruit at room temperature. This way, if the fruit is marinated, the flavored liquids won't be diluted by excess moisture and where butter is brushed on the fruit, the melted butter won't congeal due to the fruit being cold.
All the fruits are grilled over direct heat with the grill uncovered. Because fruits are rich in natural sugars, they caramelize quickly.
Always use tongs to turn the fruit because a fork can tear the flesh of the fruit.