Kristeng,
I know I may not be addressing your question/concern directly, but when I am in a similar situation, it usually helps to think of the target audience... i.e. who and why would someone visit my site? If I can identify a specific group, I go for it.
There are many different sub-areas within the recipe/cooking market... cooking recipes for busy individuals, specific cuisines and types of foods.
Needless to say, you need to be passionate about the topic... not just pursue it because there is a demand for it. While you may succeed without passion, you will enjoy the process a whole lot if you are interested in the topics of the website.
Do you know if your web host allows you to have more than 1 domain? You can always just keep cookyourdinner.com, because maybe you will come up with a great idea for it in the future.
In addition, I think the domain cookyourdinner.com can be applied to may subareas in the recipe/cooking market, so I would keep it for now
Sorry I have rambled, but these are my general thoughts
Let me know if you would like me to clarify
Sherif