if you like lemon bars and are willing to put in a small amount of work, i just found that this is pretty amazing
typically lemon bars are in the 120-160 range for a 2x2 square... i found and edited a recipe and came up with similar sized bars for 74 calories each! they aren't the jelly/custard texture but they have the same taste. super easy.
1 box angel food cake mix (i used duncan hines)
1 20oz can lemon pie filling (i used comstock)
preheat oven to 350
mix those two items (just those two!)
very very lightly spray some cooking spray into two 11x9 baking dishes (if you use too much the bottom gets mushy)
evenly divide the mixture between the two pans
bake at 350 for 23-26 minutes until lightly browned on the top
allow to cool and sprinkle each pan with 1/2 tbsp powdered sugar
cut each into 18 bars
makes 36.
74 calories apiece. 0g fat, 16g carbs, 1g protein, 120mg sodium