Grease the inside of a 3-4 quart slow cooker with butter. In a large bowl, using a handheld mixer, beat the egg whites on high speed until soft peaks form. In another large bowl, beat together the egg yolks, yogurt, lemon peel and lemon juice on medium speed for 1 minute. Add the sugar, flour and salt and beat on medium speed until smooth, about 2 minutes. Working in 3 or 4 batches, gently fold in the beaten egg whites.
Scatter three quarters of the banana slices on the bottom of the slow cooker, and then pour in the batter. Cover and cook on high until the cake is puffed, the top is set and the edges are browned, about an hour and 20 minutes. Remove the slow cooker insert, still covered, and cool for about 20 minutes.
Spoon the pudding into bowls and top with whipped cream and remaining banana slices.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.