This recipe is wonderful. Always works. I do not use as much mayo but I do slather on. My husband loves it and he usually doesn't comment. while the tenderloins cook I and make homemade applesauce. Just peal and cube put in a pot with tbsp. water add sugar to taste. Can be chunky or smooth.

Second time making it like this. I also use Hellmanns, it is the best I have tried yet.

I stopped making tenderloin because I always overcook it to the point of total dryness. I tried this recipe last weekend and was really surprised by how good it was. It was tender and juicy. After reading some of the comments I decided to mix some bread crumbs and parmesan cheese along with the onion soup mix and it was delicious, also mixed miracle whip, mayo and stone grd mustard together for the coating. I'm wondering if anyone put it on a rack to keep the crust on the bottom. Thank you for a great recipe.

Pork tenderloin is my son's favourite meal so I've tried many recipes, but this is one of the best. Definitely a keeper!

I am trying this tonight! Can't wait! I hope it is as good as everyone says! :-)

Incredibly easy to make and very tasty. These were a big hit at our Wednesday Night Dinner, and they vanished quickly. We used four 3# pork tenderloins this time, and they were ready in no time at all. Thanks for submitting the recipe.

Yummy! I was given a pork tenderloin and had no idea what to do with it. I tried this extremely easy recipe. And we loved it. Hmmm I wonder what other kind of meat I can try mayo and onion soup mix with? Will use this recipe again. Thanks!!

This is a fantastic recipe! I've never changed or adjusted it at all. I've made this recipe a number of times over the past 3 years and it's gotten amazing reviews every time. I have friends who request this dish repeatedly. I'm making it for dinner tonight.

Outstanding! Pork can sometime be dry and this locked in the juices and was delicious without an overwhelming onion taste. This is going to be a mainstay for our family from now on!

Best and easiest recipe. My husband and I thought it was great. Super tender and juicy. A must add to my favorite recipes.

Delicioso!!!

Simple as it can be - and just great. Have made it now for 3 parties and everyone raves - including the gal who we all acknowledge as the best cook among us!

Love this recipe and easy to make. Used onion soup mix but you can alter. Will make it with "fried onion crunch".

This recipe is amazing!!! I've made it 5 times in the last 2 months. To me the mayo brand doesn't matter. I've tried several. I highly recommend this recipe to everyone.

I must say... very moist. I only cooked to 150°F though, when it sits for 15 minutes it continues to cook and it was perfect temp when ready to eat. I have a question though. I don't know if I put too much mayo on it or too much soup mix on it (I only made 1 loin, 1 pk soup mix) but, it didn't make a "creamy sauce" it had a nice crust on outside but mayo didn't melt. ?? What did I do wrong. I did do the "noodle" thing, I added a little water and beef base to the pan, made a nice Au Jus put back in oven, they were fabulous. Any hints or suggestion on what I did wrong with the loin though???? I would like to try it again and do it right next time.