Slow-Cooker Mississippi Pot Roast

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We had a super busy and fun weekend! We headed up to Utah for my sister in-law’s birthday party, complete with delicious mocktails (girls only, which was a blast), and spent time with friends there, as well.

I wish I could spend even more time with the people I love, but the distance makes it tricky sometimes.

We ended up heading back to Idaho this morning, and the beautiful weather allowed us to be able to finally get some much-needed yard work done!

Chris and I also took a nap, which was awesome.

Looking at the forecast, we can get started on our fence this week, and if the weather holds up, can get most of it done by the weekend!

I wanted to make something yummy for dinner, but wanted something that basically cooked itself, since we were working out in the yard until it got a bit too chilly.

My grandma had given me a recipe for her famous pot roast, which she makes pretty frequently and is melt-in-your-mouth good.

The secret to the deliciousness is…butter! Of course, right?!

It’s all done in your slow-cooker, but since it takes eight hours and it was already 3 o’clock, I opted for using my Instant Pot instead.

I didn’t really want to eat dinner at 11:00 PM. Can you blame me?

Crock-Pot SCCPVL610-S 6-Quart Programmable Cook and Carry Oval Slow Cooker, Digital Timer, Stainless Steel

Instant Pot 7 In 1 Multi-Use Programmable Pressure Cooker, 6 Quart | 1000W

This pot roast is delicious to have by itself, or makes into the best sandwiches, as well. You’ll definitely want to have some as leftovers!

Mississippi Pot Roast

Recipe adapted from


  • One 3-4 pound boneless beef roast, your choice of cut (We used a chuck roast).
  • 1 stick (8 tablespoons) butter
  • 1 package au jus gravy mix**
  • 1 package dry ranch dressing mix
  • Pepperoncini peppers, number to your liking, and a little juice (We put 8 in).
  • Salt and freshly ground pepper, if desired


  1. Put the roast in a slow cooker or Instant Pot. Add the butter, au jus gravy mix, ranch dressing mix, and pepperoncini peppers and juice. Add salt and pepper if you like and cook on low until tender, about 8 hours in a slow-cooker and 1 1/2 hours in an Instant Pot.

** I completely swore that I had seen an au jus gravy mix package in my spice cupboard, but I was wrong! I ended up making my own au jus and putting the ingredients in my Instant Pot with everything else.

Simple Au Jus Gravy Recipe

Recipe from 


  • 3 cups water
  • 4 teaspoons beef bouillon (or 4 cubes)
  • 1 teaspoon soy sauce
  • 1/4 teaspoon garlic powder
  • Salt and pepper


I just put all of this in my Instant Pot,  but if you wanted to make the gravy itself, see below!

  1. Place the water in a medium sauce pan and bring to a boil.
  2. Reduce heat to low; whisk in the beef bouillon.
  3. Whisk in the soy sauce, garlic powder and salt and pepper to taste.

If you like a thicker au jus gravy, you can whisk in flour to thicken it!

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