Instant Pot Mississippi Pot Roast

This Instant Pot Mississippi pot roast is that kind of meal, a pressure-cooker version of the Southern-style roast traditionally flavored with ranch seasoning and pepperoncini (a Southern-style comfort roast popular in American home cooking).

It's rich, savory, and a little tangy with almost no prep. Five main ingredients, one pressure cooker, and dinner's done.

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The first time we made this, it was a total cleanup-the-fridge moment. There was a chuck roast, half a jar of pepperoncini, and some seasoning packets left from the holidays.

We tossed them all in the pot with some butter and hoped for the best. The result was crazy tender, flavor-loaded beef we now crave on the regular.

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What Makes This Recipe Work So Well

This roast gets its flavor from a weirdly smart combo-ranch seasoning (a dry buttermilk-herb mix), au jus mix, butter, and pepperoncini, with the ranch mix lending tangy buttermilk-herb notes and the au jus providing concentrated beefy richness, and it contrasts with lower-fat dairy like skim milk basics and uses in cooking.

• No chopping - Just dump everything in and press a button
• Fork-tender beef - Thanks to the pressure cooker
• Few ingredients - Most of them shelf-stable; for how similar shelf-stable sweets are made, see what marshmallows are made of.
• Versatile - Serve over mashed potatoes, rice, or on buns

It's the low-effort dinner that still feels like something special.

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What You’ll Need for Mississippi Pot Roast

This short list is what makes the whole thing shine; for other layered-sweet inspirations like turtle, see turtle flavor explained.

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• Chuck Roast - Marbled and meaty, the best cut for pressure cooking, as its collagen and marbling break down under pressure for tender, shreddable beef.
• Ranch Seasoning Mix - Adds that herby, savory layer
• Au Jus Mix - For richness and that deep roast flavor
• Unsalted Butter - Keeps the roast juicy and silky
• Pepperoncini Peppers - Bring the tang and a little kick
• Pepperoncini Brine - Just a splash brightens the whole pot

No slicing or searing needed. Just layer it and lock the lid and pressure cook on high for about 60 minutes.

Pair this roast with tried-and-true accompaniments from easy sides for Mississippi-style mains to round out the plate.

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Step-by-Step Breakdown

This method is made for busy nights. Each step gets straight to the point with no extra mess.

• Layer the Ingredients - Place the roast in the Instant Pot. Sprinkle the ranch and au jus seasoning evenly over the top.
• Add the Butter and Peppers - Cut the butter into pieces and place over the roast. Add whole pepperoncini and a couple tablespoons of brine.
• Pressure Cook - Seal the lid. Cook on High Pressure for 60 minutes, then let the pressure release naturally for at least 15 minutes.
• Shred the Roast - Open the lid, shred the meat directly in the pot, and stir it in the juices.
• Serve - Spoon it over mashed potatoes, rice, noodles, or stuff it into sandwich rolls.

That's it. It makes its own sauce while it cooks, so no need for gravy.

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Easy Sides That Go with It

This roast is rich, so sides that are starchy, buttery, or tangy help balance things out, cutting richness with acidity or creamy textures.

Side Dish	Why It Works
Mashed Potatoes	Creamy base that soaks up the juices
Egg Noodles	Soft and wide, great with shredded beef
White or Brown Rice	Simple and sturdy for soaking sauce
Garlic Bread	Crunchy and buttery contrast
Green Beans	Light, crisp, and cuts through richness
Coleslaw	Tangy and crunchy to balance the heat
Dinner Rolls	Great for sopping up the leftovers

Pick one or two and you're good to go; try sides to elevate hearty dinners; pair the meal with cold desserts like icebox cakes (no-bake, chilled layered desserts) for cool desserts after dinner.

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How to Store and Reheat

You'll probably have leftovers-and that's a good thing.

Store: Cool completely, then transfer to an airtight container. Keep in the fridge for up to 4 days.

Reheat: Warm in a skillet with a splash of water or leftover juices. Cover and heat over medium-low until warmed through.

Freeze: This freezes well. Pack in freezer bags or containers and freeze for up to 2 months.

Thaw overnight before reheating.

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Frequently Asked Questions

1. Can I use a different cut of beef?

Yes. Brisket or bottom round works, though chuck roast gives the best texture.

2. Is this recipe spicy?

Not really. The pepperoncini adds tang more than heat.

3. Can I skip the butter?

We don't recommend it-it's key for the richness. Try cutting it in half if needed.

4. Do I need to sear the roast first?

Nope. The Instant Pot gives it enough depth without browning.

5. What’s the best way to serve it?

Over mashed potatoes is classic (a traditional Southern presentation), but it's also great in hoagie rolls or with rice; finish the meal with single-serve dessert ideas for portions.

This Instant Pot Mississippi pot roast is one of the easiest ways to cook a roast that tastes like you planned it all week, using pressure cooking to reach fall-apart tenderness in about an hour.

Like this roast, barbacoa-style beef for tacos and sandwiches uses the Instant Pot to produce tender, shreddable meat. For more pairing ideas, see sides for chicken pot pie to serve with comforting mains that soak up gravy.