I made this banana bread from my children's Sesame Street book.  I liked that it started out with whole wheat flour and honey.  I used pastry flour.

It had an impressive rise in the oven then collapsed to flat on the counter.  In fact, it started falling at the 55 minute mark. 

Can you suggest any improvements that would help it stay high?  I thought of eggs and baking powder but I'm not sure.

3 ripe bananas

3/4 c. honey

1/4 c. melted butter

1/2 tsp. baking soda

1 1/2 c. whole wheat flour

Cook at 350 for one hour.

Thanks!

Celeste.