Add 1 inch of oil to your frying pot and bring to medium heat (about 350°F).

In a large mixing bowl, combine pureed bananas and flour. Mix with a spatula until just incorporated; do not overmix.

Use a 2 tsp cookie scoop to scoop dough balls and gently release them into the heated oil. Fry until the bottoms are golden brown, then flip and fry until the other side is also golden brown.

Remove donuts from oil and place on a plate lined with paper towel to cool.

Once cool enough to touch, add your desired topping.