You never need to throw away a ripe banana. A ripe banana is a banana that is no longer all yellow - it is now covered in brown spots all over. My kids like completely yellow bananas and won't eat a banana if it starts getting those brown spots. So, those bananas sit out on the counter turning browner and browner...which is a good thing - the perfect thing actually - if you are wanting to bake with them. Ripe bananas are exactly what you need to ...