Can I appoint both of my sons as executers of my will

You are allowed to appoint co-executors in a will or co-trustees in a trust. From a favoritism perspective this is a great approach. However, in practical reality it can create problems. For example conflict can arise if one party wants to sell mom's house and one doesn't.  Plus, in my opinion, it doesn't provide much better security that your wishes will be carried out. A person intent on committing fraud will commit fraud. Thus, I do not recommend co-fiduciaries. It's ok but not the best solution. Also, if you have assets you should consider getting a living trust. I encourage you to talk to an experienced estate planning attorney. Good luck.  -John