The temptation is to think whether or not there is another way, and of course the tempter is willing and able to suggest several possibilities. He proposes that Jesus should turn the stones into bread. We tend to think of bread as something that complements a meal. If you are from the South that bread may be more essential than in other places but still it is something that basically complements other food. But if you are to truly understand this temptation you have to think of bread as it is defined in this context.
Bread is a metaphor for sustenance, the essential ingredient of life.
One cannot exist without bread and water. The temptation offered Jesus is to forgo death and simply teach people about life. But that would not have been sufficient because it is only through the death and resurrection that we learn the total depth and width and height and breadth of God's love. We live not only for bread but by every word that comes from the mouth of God. The quality of life people possess greatly depends on what they believe and trust in.