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["Slice the bananas and set them aside in a mixing bowl. Combine the butter and sugars in a measuring cup and heat in the microwave until soft.", "Beat the mixture until smooth, then heat 1-2 minutes more on high until it bubbles. (Longer will caramelize it, which can also be good.).", "Add the rum (watch for the alcohol to boil off) and mix thoroughly. Pour over the bananas and refrigerate until cool. (Overnight is good.).", "Bake the cake according to package directions. Pan doesn't matter.", "Slice the cake into 1"" cubes. (This is easier to do if it's already slightly dry.).", "Mix the lemon juice into the yogurt, stirring thoroughly to get it nice and creamy.", "Cook the bananas in the microwave for a few minutes; they should be soft but not mushy. Pour off and reserve the cooking liquid.", "Assembly time! Layer cake, bananas, and yogurt into a nice glass casserole or bowl. I usually do 2 full sets of layers, with a third layer of cake on top. Pour the reserved cooking liquid on top and top with the remaining yogurt.", "If you've got an extra fresh banana lying around slice it and arrange it on top; sprinkle cinnamon or powdered nuts if you like. Serve chilled."]
