How long do you cook a three and half pound baron of beef?

You need to provide more information for me to give you an accurate cooking time for a 3.5 pound baron of beef. Here's what I need to know:

* Desired level of doneness: Do you want it rare, medium-rare, medium, medium-well, or well-done?

* Cooking method: Are you roasting it in the oven, grilling it, or using a slow cooker?

* Cooking temperature: What temperature will you be cooking the beef at?

Once I have this information, I can calculate a more accurate cooking time for your baron of beef.