Grind the cracker, combine with sugar and melted butter.
Wrap the form with foil in 2-3 layers, grease with oil, distribute the prepared mixture on the bottom and sides. Send to the oven for 8-10 minutes, 180C. Cool down.
Meanwhile, prepare the filling. In a bowl add cream cheese, sugar, flour, pudding mix. Beat at low speed.
Add sour cream and mix well on low speed.
Add eggs one at a time, mixing slowly after each addition.
Add banana puree and vanilla extract, mix on low speed until smooth. The mixture will be a little lumpy.
Pour the cheesecake batter onto the crust.
Bake for 1.5 hours at 150C in a water bath. Place the form in a larger pan (you can use a deep large frying pan with a removable handle). Pour boiling water into the outside pan, so it comes halfway up the sides of the cheesecake mold.
Turn off the oven and leave the door closed for 30 minutes. The cheesecake will continue to cook but will also start to cool slowly. Then the completely cooled cheesecake needs to be put in the refrigerator.
Arrange a layer of banana slices on top.
Then garnish with cream, banana slices and crackers.