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Slow Cooker Mississippi Pot Roast with Pepperoncini

Slow Cooker Mississippi Pot Roast

iamwinfred
Mississippi Pot Roast is the ultimate set-it-and-forget-it comfort food — a tender, fall-apart chuck roast slow-cooked with ranch seasoning, au jus mix, butter, and tangy pepperoncini peppers. With just 10 minutes of prep and 8 hands-free hours in the slow cooker, this five-ingredient wonder fills your home with an irresistible aroma and delivers melt-in-your-mouth beef bathed in a rich, savory-tangy sauce unlike any traditional pot roast you've had before.
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Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Course Main Course
Cuisine American
Servings 8 servings
Calories 420 kcal

Equipment

  • 6-quart slow cooker Programmable model recommended so it switches to warm automatically
  • Sharp knife For trimming excess fat from the roast
  • Cutting board
  • Measuring cups For the pepperoncini brine
  • Tongs or two forks For shredding the meat once cooked
  • Meat shredding claws (optional) Makes shredding faster and easier than two forks
  • Serving platter
  • Large slotted spoon For transferring the roast from the slow cooker
  • Meat thermometer To confirm internal temperature of 190–205°F for fall-apart texture
  • Skillet (optional) For searing the roast before slow cooking for deeper flavor

Ingredients
  

  • 3-4 lb chuck roast 1.4–1.8kg; choose a well-marbled roast for best flavor and tenderness
  • 1 oz packet ranch seasoning mix dry mix, not dip mix; 1 standard packet
  • 1 oz packet au jus gravy mix 1 standard packet; adds savory depth to the sauce
  • 1/2 cup unsalted butter 113g / 1 stick; cut into 6–8 pats; do not skip
  • 8-10 pepperoncini peppers whole; adjust quantity to taste preference
  • 1/4 cup pepperoncini brine 60ml; from the pepper jar; this is where the magic happens

Optional Seasoning

  • salt light pinch; optional — the seasoning packets provide plenty of flavor
  • black pepper light pinch; optional

Instructions
 

  • Remove the chuck roast from the refrigerator 20–30 minutes before cooking to bring it closer to room temperature. Pat completely dry with paper towels on all sides, then trim any large pieces of excess exterior fat, leaving the marbling intact.
  • Lightly season the roast with a pinch of salt and black pepper if desired, then place it in the bottom of your 6-quart slow cooker insert.
  • Sprinkle the ranch seasoning and au jus gravy mix evenly over the top of the roast. Place the butter pats on top, arrange the pepperoncini peppers around and over the roast, then pour the pepperoncini brine over everything.
  • Cover with the lid and cook on LOW for 8 hours (or HIGH for 4–5 hours). Resist lifting the lid during cooking — each peek adds 15–20 minutes to cook time.
  • The roast is done when it is fork-tender, falls apart easily, and registers an internal temperature of 190–205°F (88–96°C).
  • Transfer the roast to a cutting board using tongs or a slotted spoon, then shred using two forks or meat claws, discarding any large fat pieces you encounter.
  • Return the shredded meat to the slow cooker and stir it into the cooking juices. Let it rest in the sauce for 5–10 minutes to absorb maximum flavor before serving.
  • Serve the shredded meat with a generous ladle of pan juices spooned over the top, alongside mashed potatoes, egg noodles, rice, or crusty rolls.

Notes

  • Best cut: Chuck roast is ideal due to its fat and connective tissue content — avoid lean cuts like sirloin, which will dry out over long cooking times.
  • Don't skip the butter: It creates the silky, rich sauce that makes this recipe famous. Use the full stick for best results.
  • Low and slow wins: Cooking on LOW for 8 hours yields more tender meat and better flavor development than HIGH for 4–5 hours.
  • Optional sear: For deeper, caramelized flavor, sear the roast in a hot oiled skillet for 2–3 minutes per side before adding to the slow cooker.
  • Don't waste the liquid: The cooking juices are incredibly flavorful — serve as a jus, thicken with a cornstarch slurry for gravy, or use to moisten leftovers.
  • Adding vegetables: Add carrots, baby potatoes, or parsnips during the last 60–90 minutes of cooking so they don't turn mushy.
  • Adjust the tang: Use more peppers and brine for extra tang; fewer for a milder flavor.
  • Storage: Refrigerate leftovers in an airtight container with cooking liquid for up to 4 days, or freeze in portioned freezer bags for up to 3 months.
  • Reheating: Reheat on the stovetop over medium-low heat or in the microwave with a splash of beef broth if the mixture seems dry.
  • Instant Pot option: Cook all ingredients on high pressure for 60–70 minutes, then natural release for 15 minutes before quick releasing remaining pressure.

Nutrition

Serving: 1ServingCalories: 420kcalCarbohydrates: 4gProtein: 38gFat: 28gSaturated Fat: 12gPolyunsaturated Fat: 2gMonounsaturated Fat: 12gTrans Fat: 1gCholesterol: 135mgSodium: 980mgPotassium: 520mgSugar: 1gVitamin A: 8IUVitamin C: 6mgCalcium: 4mgIron: 20mg
Keyword crockpot chuck roast, easy pot roast recipe, Mississippi pot roast, pepperoncini pot roast, slow cooker pot roast
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