Heat the dutch oven on the stovetop with olive oil until shimmering. Add the roast and sear for 2 minutes.
Then, carefully flip the roast over to sear the second side.
While its searing, cover with the pepperoncini juice, then au jus and ranch packets.
Dot the top of the roast with chunks of butter and pepperoncini
Cover and bake on the center rack for 3 to 3 1/2 hours for a 3 pound roast, and up to 4 hours for a 4 pound roast. It's done when a fork twists into the meat with no resistance and it shreds easily, so give it more time if it's still firm.
Allow it to rest for 15 minutes before shredding.
Notes
I use all the juice from the 12 oz pepperoncini jar, which comes out to about 1/2 a cup.
I do prefer adding my own ingredients to my roasts, but this is a great way to get it in the oven quickly.
You can use the whole ranch packet, but I find it to be a tab bit too salty for my liking.