Peel the bananas and cut each banana in about 10 chunks.
For the batter, combine the flour, baking powder, and sugar. Add the plant-based milk and sparkling water and whisk together. If you dip a banana chunk into the batter, the batter should stick to the banana. Add more water if it's too thick. Add more flour if it's too runny.
Heat the frying oil in a pot (just enough so that the banana fritters can swim in the oil). Fry each banana chunk dipped in the batter for about 1-2 minutes - until golden and crispy. If they brown too quickly, then your oil is too hot, reduce the heat a bit.
Transfer them to a paper towel to remove excess oil.
Put all the banana fritters in a large bowl, add the maple syrup and toss to coat them all. Sprinkle the banana fritters with sesame seeds and enjoy!