this has been one of my favorites my entire life. my mom made it all the time, and it is awesome. i like to add walnuts or mini chocolate chips to make it even more delicious.
1 1/2 cup flour
1 tsp baking soda
1/2 tsp salt
mix above in bowl
3 ripe bananas, mashed
1 cup sugar
1/2 stick butter or margarine, melted
mix bananas, sugar, butter and egg, add dry ingredients and bake in greased loaf pan for 1 hour and 15 minutes at 325 degrees.
i prefer to take it out of the pan immediately and wrap it in saran wrap/plastic wrap. this gives it a more gooey crust. if you like crispier crust, leave it uncovered for a bit.