Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13 inch baking pan.
In a large bowl, cream margarine and sugar. Gradually mix in eggs and vanilla. Stir in bananas. Sift together the flour, baking powder, baking soda, and salt. Stir into the sugar mixture. Finally, fold in dates and chopped almonds.
Spread batter evenly into prepared baking pan. Bake in preheated oven for 30 to 35 minutes.
While the bars are baking, You can make the lemon icing. In a small bowl, Mix together salt and confectioners sugar. Stir in soft butter, lemon juice, and vanilla. Beat until smooth.
When bars are cool, spread the lemon icing over the top and cut into squares. Mmmm Mmmmm!
