Banana flowers contain vitamins A and C, calcium, iron, potassium and magnesium. It is considered to be health food and has been used for many centuries in different cuisines.
The range of food items made with banana flowers includes soups and salads to curries and cutlets. Bake them if you like. They can be used in both vegetarian and non-vegetarians cuisines. Most of the dishes look more attractive if served in the outer sepals that are not used
There are several recipes for banana flowers on the Internet. Here are two sites which provide details
Banana Flower Soup with coconut and shrimp, and