Slice the bananas into approximately 1/2 inch thick slices.

In a small bowl, combine the granulated sugar and ground cinnamon.

Prepare a small bowl of water for sealing the wonton wrappers.

Lay a wonton wrapper on a clean work surface.

Dip a banana slice into the cinnamon sugar mixture, ensuring it is lightly coated.

Place the cinnamon-sugar coated banana slice in the center of the wonton wrapper.

Fold one corner of the wonton wrapper over the banana slice.

Moisten the adjacent corner with water and fold it over the first corner, gently pressing to seal.

Repeat the moistening and folding process until all four corners are sealed, creating a small packet.

Repeat steps 4-9 with the remaining bananas and wonton wrappers.

Heat oil in a saucepan or wok to medium heat, around 350°F (175°C).

Carefully drop a few of the wontons into the hot oil.

Fry for about 1 minute, or until golden brown, flipping as needed to ensure even cooking.

Remove the fried wontons with a skimmer and place them on paper towels to drain excess oil.

If desired, dust the wontons with powdered sugar before serving.