I cooked 2 filets at 135 degrees for 45 minutes and they turned out great. I have a large group of 10 that I would like to do the same dish. The filets will be 21/2" thick. How long do you cook with the additional meat?
Time and temperatures won’t change for additional (same) meats. Just be sure not to stack/overlap the meat, as this will affect cook time. If they are 2 1/2" thick, I’d go with ~1.5 hours.
Thank you!
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You’re welcome! 
I cooked 6 strip steaks for my non believer friends, 130 F for 2 1/2 hrs. Bags had fresh garlic , olive oil and Montreal Chicken Seasoning. Patted dry then seared in a HOT cast iron skillet. Results, knocked it out of the park.
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“How long do you cook 10 thick filet mignons?”
For some reason this reminded me of Gracie Allen’s classic recipe for roast beef…
1 large Roast of beef
1 small Roast of beef
Turn oven on and place both roasts in the oven.
When the small one burns, the big one is done.
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