Is it safe to cook and eat a 2 year old frozen pecan pie?

It is generally safe to cook and eat a frozen Pecan Pie that is two years old, provided it has been stored properly in the freezer at a consistent temperature. However, the quality may have deteriorated, affecting taste and texture. Always check for any signs of freezer burn or off smells before consuming. If in doubt, it's best to discard it to avoid any potential health risks.