Weight Watchers Banana Ice Cream Recipe. This almost fat free dessert will cure your ice cream cravings without breaking your diet. Made with evaporated skim milk, mashed bananas, egg substitute, sugar substitute of your choice, vanilla, and low fat milk. Super easy to make in your ice cream maker. This recipe is great for leftover bananas. MyWW Points: 1 Blue Plan and 6 Green Plan. 1 WW Freestyle Point and 6 Smart Points. This kid-friendly treat is gluten free, vegetarian, and low fat.