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Home / Recipes / Beef

Keto Pot Roast In An Instant Pot (Or Slow Cooker)

By Lisa MarcAurele · Sep 18, 2023 · 13 Comments

5.5K shares
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instant pot slow cooker pot roast pinterest image
low carb pot roast

Enjoy a tender and juicy keto pot roast for dinner! Using an Instant Pot (or a slow cooker), serve this deliciously juicy meat with baby carrots and creamy mashed cauliflower for a warm, comforting meal.

keto pot roast recipe cover image
Article Index
  • Ingredients Needed For Keto Pot Roast
  • How To Make Keto Pot Roast
  • Frequently Asked Questions About Keto Pot Roast
  • Other Low Carb Slow Cooker Recipes
  • Recipe

It's so easy to make a comforting keto pot roast that tastes just like the recipe you loved as a kid. There are very few ingredients, and it's pretty easy to add more and make it how you want it.

Honestly, classic pot roast is already low in carbs. Once you make a few adjustments, the rest is pretty similar!

The only things that needed updating for a keto diet were the flour in the gravy and the potatoes.

This recipe is one of those "make once, eat twice" meals. You can save leftovers for lunches later in the week (which is a huge money saver!)

Ingredients Needed For Keto Pot Roast

Whether you make this in the slow cooker or the Instant Pot, the recipe remains the same. Here's a bit more information about what I used, along with any substitutions you can make.

Low-Carb Vegetables

Traditionally, you slowly cook a chuck roast with potatoes and carrots. So if you're following a keto diet, you'll want to replace those with low-carb vegetables.

I used cauliflower and celery in my keto roast beef recipe. But cauliflower can get mushy when slow-cooked. That's why I often replace it with turnips or radishes, which are much firmer.

For a standard low-carb diet, a small number of carrots can be okay. And, since I served to guests who weren't strict keto, I decided to use a few in this slow cooker low-carb pot roast.

The carb count per serving is still low, but most people on a ketogenic diet avoid carrots because they contain natural sugar.

Meat

I used a chuck roast because it has the perfect amount of meat and fat. You can use any type of beef roast. Make sure it will fit in your slow cooker before you buy one that is too big.

Gravy

All you need to make the gravy is some liquid from the slow cooker and some xanthan gum. The xanthan gum thickens the keto gravy right up!

Spices

Use your favorite spices! I love how the rosemary, thyme, and beef broth all combine to make it taste like a classic pot roast.

Please note: Check out the recipe card at the bottom for a full list of ingredients used to make this low-carb recipe.

ingredients for keto pot roast recipe

Quick Tips:

  • You can use dried thyme if you enjoy the flavor, but not the leaves. Just sprinkle some on along with fresh rosemary.
  • For a thicker gravy, use ½ teaspoon of xanthan gum. For a runnier consistency, use ¼ teaspoon.
  • If you want the pot roast to have a little spice to it, add some red pepper flakes.

How To Make Keto Pot Roast

In the printable recipe card, I list the steps for pot roast in both the slow cooker and the Instant Pot. Here are those steps again, but with some step-by-step photos and a few additional tips.

Season The Chuck Roast

Before slow cooking, the chuck roast should be seasoned with salt and pepper and then browned on both sides.

An iron skillet works best, but if you want to go with the one-pot method, you can sear in an Instant Pot or a slow cooker with a brown/sauté setting.

browning the roast and vegetables in iron skillet

Add Vegetables And Spices

Onions and vegetables add additional flavor, especially when sautéed in the juices from the meat before slow cooking. Beef broth, rosemary, and thyme round out the flavors and enhance the taste of the meat as it slow-cooks.

pot roast in crock pot

Cooking Times

The cooking time will vary depending on the size of the meat and whether it's slow-cooked or cooked in an electric pressure cooker.

Slow Cooker

If you are wanting to make this low-carb roast in a slow cooker, the meat will be done in 4 to 6 hours on high or 6 to 8 hours on low.

Instant Pot Electric Pressure Cooker

To speed things up, you can cook a keto chuck roast in an Instant Pot. Cooking time varies based on the size of the meat, but I find 60 minutes at high pressure followed by a quick pressure release is just about right for a 5-pound chuck roast.

For a smaller 3 pound piece, I'd lower the time to 50 minutes.

instant pot with pot roast and carrots on sheet pan

What To Serve With A Low-Carb Pot Roast

This is a complete meal, so you don't need very many sides to go along with it. If you want some additional food to serve, try mashed celery root mixed with cauliflower for a keto-friendly alternative to mashed potatoes.

For a simple vegetable side, green beans almondine cooks up quickly. Or, serve it with a brussel sprout soup.

Do you like roasted potatoes? These keto roasted radishes are a fabulous low-carb stand-in.

Pan-fried brussels sprouts with bacon will add in some fat and flavor. Also, grilled cabbage steaks are an easy yet tasty side that cooks up easily in a pan, on the grill, or in the oven.

Finally, picky eaters love keto mashed cauliflower with cream cheese mixed in.

Frequently Asked Questions About Keto Pot Roast

Before I get to the printable recipe card, here are some questions people have asked about it. If you don't see your question in this list, please leave it in the comments.

Can I use arrowroot instead of xanthan gum?

Yes, you can definitely use arrowroot in the gravy instead of xanthan gum. I prefer it and try to use it whenever I can.

The only problem is that it adds more carbs to the dish, so be aware of that if you use it.

How do you store leftover pot roast?

Store leftovers in an airtight container in the refrigerator. It will stay fresh for up to 3 days.

Can I add Worcestershire sauce to the roast?

Yes, Worcestershire sauce is a popular ingredient in some recipes for pot roast. If can't find any at the store that works for you, try making a batch of my Worcestershire sauce recipe. It is gluten-free and low-carb!

keto pot roast featured image

Kids and adults alike will dig into this soft and juicy pot roast! The gravy is so delicious that you'll enjoy smothering it all over the roast.

Other Low Carb Slow Cooker Recipes

If you enjoyed this keto pot roast, here are some more keto slow cooker recipes that easily become the main course. They are some of my go-to's:

  • Slow-Cooked Keto Beef Tips are always tender and tasty.
  • Crockpot BBQ Pulled Chicken is so easy because you just put all the ingredients in the slow cooker and let it work.
  • Pork Curry In The Slow Cooker comes with a creamy dairy-free sauce that's paleo friendly too.
  • Slow-Cooked Pork Adobo gives you an amazing taste of the Philippines.
  • Keto Pork Loin is slow cooked with a balsamic vinegar seasoning and is sure to please.
  • Crockpot Chicken Legs And Thighs are budget-friendly and perfect for busy days.

Follow us on FACEBOOK, PINTEREST, and INSTAGRAM for even more tasty keto-friendly recipes!

Recipe

keto pot roast featured image

Keto Pot Roast (Instant Pot, Slow Cooker)

5 from 7 votes
Enjoy a tender and juicy keto pot roast for dinner! Using an Instant Pot (or a slow cooker), serve this deliciously juicy meat with baby carrots and creamy mashed cauliflower for a warm, comforting meal.
Prep Time:10 minutes mins
Cook Time:8 hours hrs
Total Time:8 hours hrs 10 minutes mins
Course: Main Course
Cuisine: American
Print Pin Review Recipe Save Recipe View Collections
Servings: 10 people
Calories: 343

Video

Ingredients

  • 4-6 pound chuck roast
  • 2-3 tablespoons sea salt or kosher salt
  • 2-3 tablespoons pepper
  • 1 cup baby carrots use half celery and half turnips for keto
  • 1 onion diced
  • 2 cups beef broth
  • 1 teaspoon rosemary dried
  • 1 bunch thyme couple sprigs

Gravy

  • 1 cup liquid from Crock-Pot
  • ¼-½ teaspoon xanthan gum as needed to thicken

Instructions

  • Drizzle olive oil over the chuck roast on all sides.
  • Sprinkle liberally with salt and pepper on all sides.
  • Place in a steaming hot skillet and brown on all sides.
  • Once brown on all sides, remove and let rest.
  • Place carrots and onions in skillet to brown and grab the juices from the roast.
  • In the bottom of your slow cooker, add onions and carrots.
  • Top with the roast.
  • Add in beef broth, rosemary and thyme.
  • Cook in the slow cooker on high for 4-6 hours or 6-8 hours on low. The meat will become incredibly tender.
  • To make the gravy, measure out 1 cup of liquid from the Crock-Pot. Sprinkle in ¼-½ teaspoon of Xanthan Gum and whisk together. Allow to sit while you plate up the rump roast.
  • For a thicker gravy, use ½ tsp. For a runnier consistency use ¼ tsp.

Notes

If you enjoy the flavor of thyme, but don't necessarily enjoy the leaves. You can just use dried leaves sprinkled on along with fresh rosemary.
For a thicker gravy, use ½ teaspoon of xanthan gum. For a runnier consistency, use ¼ teaspoon.
If you want the pot roast to have a little spice to it, add some red pepper flakes.

Low Carb Sweeteners | Keto Sweetener Conversion Chart

Nutrition

Calories: 343 | Carbohydrates: 3g | Protein: 36g | Fat: 21g | Saturated Fat: 9g | Cholesterol: 125mg | Sodium: 1734mg | Potassium: 691mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1814IU | Vitamin C: 2mg | Calcium: 47mg | Iron: 4mg

Additional Info

Net Carbs: 2 g | % Carbs: 2.3 % | % Protein: 42.2 % | % Fat: 55.4 % | SmartPoints: 9
Values
Array
(
    [calories] => 343
    [carbohydrates] => 3
    [protein] => 36
    [fat] => 21
    [saturated_fat] => 9
    [cholesterol] => 125
    [sodium] => 1734
    [potassium] => 691
    [fiber] => 1
    [sugar] => 1
    [vitamin_a] => 1814
    [vitamin_c] => 2
    [calcium] => 47
    [iron] => 4
)

Notes on Nutritional Information

Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

Copyright

© LowCarbYum.com - Unauthorized use of this material without written permission is strictly prohibited unless for personal offline purposes. Single photos may be used, provided that full credit is given to LowCarbYum.com along with a link back to the original content.

First published on December 30, 2019. Post updated on November 18, 2021, with additional recipe information and higher quality images.

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Reader Interactions

Comments

  1. Jessica

    May 28, 2025 at 8:02 pm

    5 stars
    Making this again! It's absolutely delicious even my picky 10 year old requests it!

    Reply
  2. Tia Acevedo

    January 31, 2022 at 6:13 pm

    Where are the instructions on how to do this in an instapot??

    Reply
  3. Kristen

    June 27, 2020 at 4:56 pm

    Just a note: I have found that arrowroot works better than xanthan gum as a thickener, because arrowroot doesn't cause that slimy texture. The secret with arrowroot is to mix it with water as you do cornstarch, but not add it during cooking, but instead add it at the very end.

    Reply
    • Lisa MarcAurele

      June 27, 2020 at 8:41 pm

      I like arrowroot better too, but it generally adds more carbs.

      Reply
  4. ChihYu

    January 03, 2020 at 5:37 pm

    5 stars
    So juicy, tender and delicious!

    Reply
  5. Heather H

    January 01, 2020 at 4:53 pm

    5 stars
    My favorite comfort food for sure. I have such great childhood memories of having this and have a hard time breaking away from the traditional way of cooking it. I'm going to try it though!

    Reply
    • Rosalind Moberg

      January 02, 2022 at 7:46 pm

      5 stars
      I’m a diabetic and love cauliflower but does it have carbs? Trying to stay on a low carb diet.

      Reply
      • Lisa MarcAurele

        January 02, 2022 at 8:57 pm

        Like all keto vegetables, cauliflower does have carbs. A medium head generally has about 29g total carbs.

  6. Raia Todd

    December 31, 2019 at 11:43 am

    5 stars
    Oh, that roast looks perfect! And I have one in the freezer just waiting for this recipe...

    Reply
  7. Carol Little R.H. @studiobotanica

    December 30, 2019 at 7:26 pm

    5 stars
    This looks SO good!!!
    I appreciate the detailed step-by-step.
    I've never tried a roast in my IP but am planning to do so now!
    Thanks!

    Reply
  8. Jean

    December 30, 2019 at 6:24 pm

    5 stars
    Love a good pot roast and this looks amazing! So easy in the slow cooker too.

    Reply
  9. Dr. P

    December 30, 2019 at 5:47 pm

    I used my insta-pot with a 2.5 lb roast and added turnips, carrots, celery and onions. I still need to find the right amount of seasonings but overall it was yummy and fall apart tender. Took about 90 min start to finish.

    Reply
  10. Erin

    December 30, 2019 at 11:02 am

    This would be wonderful for a warm New Year's Eve dinner!

    Reply
5 from 7 votes

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