Pat the surface of the beef roast dry with paper towels.
Heat olive oil in a large skillet over medium-high heat.
Sprinkle with salt, garlic and pepper. Place the seasoned roast in the skillet. Sear for 3-4 minutes per side, until a light golden brown crust begins to form in places.
Transfer the seared roast to the crockpot. Add ranch dressing mix, gravy mix, pepperoncini peppers and garlic cloves.
Cook on high for 3-4 hours, or low for 7-8 hours.
Once the beef is tender, shred it into large chunks and allow those chunks to rest in the the crockpot juices for 10-15 minutes before serving, uncovered.
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Notes
This recipe can also be done in the oven in a Dutch oven or roasting pan!