Slow Cooker Mississippi Pot Roast
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My Slow Cooker Mississippi Pot Roast is the most tender and flavorful roast you’ll ever try, thanks to the buttery gravy, ranch seasoning, and tangy pepperoncini peppers. Whether you serve it over mashed potatoes or shred it for sandwiches, it’s a meal everyone will rave over.
My Slow Cooker Mississippi Pot Roast
Between school pickups, activities, and everything else on the calendar, getting a real dinner on the table can feel impossible some nights. This recipe solves that. You dump everything in the slow cooker in the morning, and by dinnertime you have a meal that tastes like it took hours of work.
That’s what makes this recipe so great for busy families. It looks and tastes fancy enough for a Sunday dinner, but it’s genuinely one of the easiest meals you’ll make all week. No babysitting the stove, no complicated steps. Just set it and forget it.
Why My Mississippi Pot Roast Recipe is the Best
- Full stick of butter — melted right into the gravy for a rich, buttery sauce that coats every bite.
- Ranch seasoning packet — adds a savory, tangy depth of flavor without needing a long ingredient list.
- Whole pepperoncini peppers — cooked right in with the roast so their tang infuses the meat and gravy as it cooks.
Ingredients to Make My Mississippi Roast in a Slow Cooker
Below is a list of the ingredients you’ll need to make this recipe. Scroll down to the full recipe card for the specific amounts.
- Beef chuck roast – While other cuts work, chuck roast is well-marbled and ideal for slow cooking.
- Avocado oil – With a high smoke point and neutral flavor, it’s perfect for searing.
- Onions (sliced 1-inch thick) – Add a naturally sweet, caramelized depth of flavor.
- Fresh garlic (minced) – Enhances the roast and gravy with rich, savory notes.
- Dry Ranch dressing mix – Use store-bought ranch packets or make your own
- Homemade Ranch Seasoning Mix.Brown gravy mix – A brown gravy packet or au jus mix works well for added richness.
- Sliced pepperoncini peppers – Bring a tangy, slightly spicy kick that sets this roast apart.
- Unsalted butter – Melts into the meat, creating a rich and flavorful gravy.
- Beef broth – Keeps the roast moist and enhances the overall flavor.
Substitutions and Variations
- Need extra gravy or less? This recipe creates plenty of delicious gravy. For less liquid, reduce the broth to ½ cup — the roast’s natural juices and butter will keep it moist.
- Make it a full meal! Add carrots, celery, or baby potatoes for a full one-pot meal. Add early for soft veggies or during the last 2 hours for firmer texture.
- Thin gravy? Remove broth from the slow cooker and bring to a simmer in a saucepan. Mix 1 tablespoon cornstarch + 2 tablespoons cold water, stir until smooth, then whisk into the simmering broth until thickened.
How to Make Mississippi Pot Roast in the Slow Cooker
Here are my step-by-step instructions so you can make this recipe with ease. For the full, printable recipe with amounts and temperatures, scroll down to the recipe card below.
- Heat the avocado oil in a large cast iron skillet over medium-high heat. Once it’s hot, sear the roast for 5 to 8 minutes per side until it’s nicely browned.
- Transfer the roast to the slow cooker. Arrange the onion slices around the roast. Sprinkle the ranch seasoning mix and brown gravy mix evenly over the top. Add the butter, minced garlic, pepperoncini juice, and beef broth. If you like your pepperoncini peppers to hold their shape, stir them in during the last 1 to 2 hours of cooking. If you prefer them extra soft, add them at the beginning with the other ingredients.
- Cover and cook on LOW for 8 to 10 hours or on HIGH for 6 to 8 hours, until the beef is fork tender and shreds easily.
- Don’t skip the sear – Browning the roast in a hot skillet adds rich, caramelized flavor and really amps up the final dish.
- Want less gravy? – Use just ½ cup of broth instead of 1½ cups. The meat juices and melted butter will still keep everything moist and flavorful.
- Resist the urge to peek – Every time you open the slow cooker, heat escapes and it can slow things down. Keep that lid on tight!
- Low and slow wins – Cooking on low gives the most melt-in-your-mouth results. But if you’re short on time, the high setting will still give you a tasty roast.
- Check the roast for doneness – Cook times can vary depending on the size of your roast. If the meat’s still tough, just let it go for another hour until it’s nice and tender.
Storage Instructions
- Refrigerate – Store leftovers in an airtight container in the fridge for up to 4 days.
- Freeze – Let the roast cool completely, then store in a freezer-safe container or bag for up to 3 months. Thaw overnight in the fridge before reheating.
- Reheat – Warm on the stovetop over low heat or in the microwave in 30-second intervals, adding a splash of broth if the gravy needs loosening.
Slow Cooker Mississippi Pot Roast FAQs
Can I make this in the oven instead of a slow cooker?
Yes! Cook covered at 300° F for 3-4 hours, or until the roast is fork-tender.
What cut of beef works best?
A chuck roast is ideal because it becomes tender and shreds easily after slow cooking. Avoid leaner cuts, since they can dry out.
Can I make this ahead of time?
Yes, it actually tastes even better the next day. Store it in the fridge and reheat before serving.
Storage Instructions
- Refrigerate – Let the roast cool, then store in an airtight container in the fridge for 3–5 days. Make sure the meat is covered in sauce to keep it moist.
- Freeze – Cool completely and transfer to a freezer-safe container. Freeze for up to 3 months.
- Reheat – Thaw overnight in the fridge (if frozen). Reheat on the stovetop in a saucepan—bring to a boil, then simmer for 20 minutes. Or microwave in 30-second intervals until heated through.
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Slow Cooker Mississippi Pot Roast
Equipment
- 1 cast iron skillet (preferred)
- 1 Crockpot
Ingredients
- 4 lb beef chuck roast
- 1-2 Tablespoons avocado oil
- 2 sweet onions sliced 1-inch thick
- 3 5 cloves garlic minced
- 1 1 oz packet ranch dressing mix
- 1 0.87 oz packet brown gravy mix
- 1 cup sliced pepperoncini or 8 whole, plus 1/2 cup juice from the jar
- 1 stick 1/2 cup unsalted butter
- 1 1/2 cups beef broth
Instructions
Sear the Roast
- Heat a cast iron skillet over medium-high heat.
- Once hot, add the avocado oil and sear the chuck roast for 5–8 minutes per side, until deeply browned.1-2 Tablespoons avocado oil, 4 lb beef chuck roast
Assemble in the Slow Cooker
- Transfer the roast to the slow cooker and arrange the onion slices around it.2 sweet onions
- Sprinkle the roast with the ranch seasoning and gravy mix.1 1 oz packet ranch dressing mix, 1 0.87 oz packet brown gravy mix
- Top with the minced garlic and butter slices.3 5 cloves garlic, 1 stick 1/2 cup unsalted butter
- Pour in the pepperoncini juice and beef broth.1 cup sliced pepperoncini, 1 1/2 cups beef broth
- Add the pepperoncini peppers on top now or during the last 1–2 hours of cooking, depending on your texture preference.
- Cover and cook on LOW for 8–10 hours or HIGH for 6–8 hours, until the meat is fork-tender and easily pulls apart.
- Shred the roast directly in the slow cooker using two forks and stir to combine with the gravy.
Nutrition
Did You Make This Recipe?
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