1 Heat oven to 400 degree's. make crust. Combine cracker crumbs with sugar. Add melted butter. Combine well,and press in to a 9 inch spring form pan bottom,and going up half way up sides of pan. Bake for 10 minutes. Remove from oven and cool.
2 make caramel- Melt butter in saucepan . Add brown sugar. Cook on high heat. Bring to a boil stirring constantly.Make sure sugar dissolves.
3 Add the condensed milk,and combine well. Bring to a boil. Set timer for 1 minute and 30 seconds. Boil on high heat stirring constantly.Mixture should get thickened.If not thickened. Cook a little longer.
4 pour half of the caramel on to bottom of crust you made. Slice 3 banana's and toss with a little lemon juice. Place slices in caramel. Pour the rest of the caramel on top. Now slice 3 more banana's and toss with lemon juice. Place in top of the caramel. Refrigerate until caramel sets.
5 make cream topping - Beat the whipping cream with confection sugar and coffee. Beat until soft peaks. Fold in 1 sliced banana. Top pie with cream. Shave chocolate bar on top. Add walnut's on top if desired. Decorate how you wish. Keep refrigerated.