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Overnight Slow Cooker Oatmeal

May 27, 2011 By Lisa Rose 35 Comments

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Slow Cooker Oatmeal

Cereal and milk is the standard breakfast in many homes, it’s also one of the least nutritious options. This slow cooker overnight oatmeal offers an easier and more nourishing start to your day – especially when paired with plenty of healthy fats.

Cereal and Granola – Unhealthy Choices

Breakfast cereals are made by an extrusion process in which grains are treated at high heat and high pressure to create the o’s, flakes, and other shapes. This process destroys nutrients in the grain, makes the oils rancid and may create toxic proteins. Despite its health food reputation granola isn’t any better. Raw oats are prepared with dry heat which makes them extremely indigestible.

Phytic Acid and Phytase

Cultures throughout the world either soaked, sprouted, and/or fermented all their grains prior to eating. Grains require special treatment because they all contain phytic acid, a storage form of phosphorus in plant tissues.

Phytic Acid:

  • found in grains, nuts, seeds, and beans – especially the bran or outer hull
  • humans cannot digest it
  • binds with other minerals in our digestive tract making minerals like calcium, magnesium, iron, and zinc, unabsorbable by our bodies.
  • inhibits enzymes that digest our food like pepsin (breaks down proteins in the stomach), amylase (breaks down starch into sugars) and trypsin (protein digestion in the small intestine)

Consuming high amounts of phytic acid can lead to digestive issues and mineral deficiencies causing bone loss and tooth decay.  Proper preparation of high phytate containing foods is essential.

The phytase enzyme neutralizes phytic acid which makes phosphorus bioavailable. It is present in plant foods that contain phytic acid but requires proper preparation to be activated. One method is sprouting. Another way is to soak grains and flour in an acid medium at warm temperatures, like this slow cooker oatmeal.

Overnight Slow Cooker Oatmeal
I usually begin prep the day before to give the oats enough soaking time (for example place all ingredients in your slow cooker on Sunday morning (or Saturday night) for a Monday morning breakfast).

1 cup Irish steel cut oats
2 tablespoons whey, yogurt, kefir, buttermilk, lemon juice, or vinegar
4 cups warm water
1/2 teaspoon sea salt
butter, coconut oil, and/or cream
optional toppings – natural sweetener, chopped nuts, dried fruit, shredded coconut, freshly ground flax seeds

1. Place oats, whey (or other acid medium), and warm water in the insert of your slow cooker and let soak for 12 hours.
2. The night before you want to serve the oatmeal (or 8-12 hours before) turn the slow cooker on to low.
3. Before serving, stir in sea salt and plenty of butter or other healthy fats and serve with optional ingredients.

UPDATE: Many people are asking which slow cooker I use for this; the Proctor Silex 33015 1-1/2-Quart Round Slow Cooker, I’m sure any brand works, though I would recommend sticking to a 1 1/2 quart size. You’ll find other great uses for it too – like chocolate fondue!

Click here to pin!

Slow Cooker Steel Cut Oats

For leftover oatmeal, check out Monica’s easy Oatcake Recipe. If you’re still craving a crunchy cold cereal, homemade is the best option, try a Coconut Granola Recipe from Haartke Online or a  Homemade Cold Breakfast Cereal at the Healthy Home Economist. For a grain-free variation see my Nutty Granola.

Recommended Reading:

Puffed Grains and Breakfast Cereals. Should We Eat them? Nourished Magazine
Dirty Secrets of the Food Processing Industry Weston Price Foundation
Sprouted Grain: The How and Why Nourished Kitchen
Living with Phytic Acid Ramiel Nagel
Boxed Cereal is Not Food Simply Being Well
Be Kind to Your Grains Sally Fallon

 

More from my site

  • Homemade Almond Coconut Milk – Vanilla and ChocolateHomemade Almond Coconut Milk – Vanilla and Chocolate
  • Basic Cauliflower RiceBasic Cauliflower Rice
  • Oven Baked Potato Latkes – Gluten-free and Egg-freeOven Baked Potato Latkes – Gluten-free and Egg-free
  • Real Food Holidays Blog Carnival – Sukkot 2010Real Food Holidays Blog Carnival – Sukkot 2010
  • Oven Roasted Turkey BreastOven Roasted Turkey Breast
  • Grain-free and Nut-free Matzah BallsGrain-free and Nut-free Matzah Balls

Filed Under: Breakfast, Real Food Tagged With: oatmeal, slow cooker

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Comments

  1. Ben says

    May 28, 2011 at 2:58 am

    I love my oatmeal, but if you’re following a paleo or primal diet, it’s a no go. Everyhwere I’ve looked concerning paleo or primal, when it states grains, it specifically mentions oatmeal due to the amount the it can spike the blood sugar. With that said, primal as the 80/20 rule that you can eat whatever 20 percent of the time, but if you’re strictly and seriously following the lifestyle, you may need to do without.

    Reply
    • lisa says

      May 29, 2011 at 12:51 am

      Hi Ben,
      Thanks for your comment. I am well aware of what constitutes a paleo diet, but my blog is not strictly paleo/primal (though many of my recipes are grain/dairy free). I’m hoping to educate people about the health dangers of processed/packaged foods and offering healthier alternatives. Those that choose to continue on to a paleo eating paradigm would know to stay away from oats.
      I hope to explore in a future post the different types of grain free diets like SCD, GAPS, and paleo and why it helps to heal various health issues.

      Reply
  2. Chloe says

    May 29, 2011 at 12:56 pm

    Hey! Thank you for your great recipe and explanation and I have a question.You said that we need “1 cup Irish steel cut oats” and is it okay to use 1 minute quick oats from Quaker? I’m ignorant the differences between several types of oats. The 1 minute oats are not flavored and I think it is just oats with nothing else.

    And one more, if we prepare the oats according to your suggestion, we gonna put yogurt and let them several hours in a slow cooker before turn it on. Is it okay for the summer? The room temp will be hot and I wonder it is okay.

    Please let me know. Thank you very much. I just have decided eat oats instead of stupid highly processed with a plenty of glucose-fructose. Thank you again! 🙂

    Reply
    • Chloe says

      May 29, 2011 at 12:58 pm

      oops! typos… the last line, I meant that stupid cereal… I will eat oats instead of cereal from now on. Cuz I have been eating too much of it. thx 🙂

      Reply
    • lisa says

      May 29, 2011 at 2:27 pm

      I wouldn’t recommend the quick oats – I’m not sure what kind of processing it goes through. If you use regular rolled oats prepare the recipe with 1 cup oats to 2 cups water.
      Warm weather is even better for the soaking time.

      Reply
  3. Nicola says

    May 29, 2011 at 3:26 pm

    Hi Lisa! Just wondering what the difference between rolled oats & steel cut is? I’m Irish (living in Ireland) & I love porridge for my breakfast. I have been very reluctant to soak my oats though as I make my porridge with milk & really don’t like it made with water.

    Reply
    • lisa says

      May 31, 2011 at 4:23 am

      Steel cut oats are the oat groats cut into pieces, rolled oats are rolled into flakes under heavy rollers (you can check Wikipedia for more details).
      One option for you would be to soak it with 2 cups of warm water and the acid then add 2 more cups milk or cream when you are ready to cook – or strain out the water and cook it with milk.
      Are your grandparents Irish as well? I would be curious to know how they used to prepare their porridge.

      Reply
  4. Tiffany says

    June 3, 2011 at 2:31 pm

    The Cheeseslave sent me over here. Thank you for this recipe. Since we have been eating more and more real foods I have been making homemade oatmeal with the oats that take about 10 minutes to cook. I would rather use steel cut oats but I do not have that kind of time in the morning. I cannot wait to try this recipe out.

    Reply
    • lisa says

      June 3, 2011 at 3:01 pm

      This is my go to breakfast when I know mornings will be especially rushed. Let me know what you think when you try it!

      Reply
  5. Lisa C says

    June 4, 2011 at 1:24 am

    Thanks for this! This is my first time on your blog…I followed a link from Cheeseslave because I have been wanting to try this.

    I just started my own food blog based on the Nourishing Traditions book, and when I get to my post on grains, I think I might link to this post because you’ve nicely explained the problem with unsoaked grains.

    Oh, and I remember reading that there is something about the oats getting rolled that destroys something good about the grain–can’t really remember–but maybe if you roll them yourself it’s okay?
    Lisa C recently posted..Nourishing Traditions- Politically Correct Nutrition

    Reply
    • Lisa says

      June 5, 2011 at 8:55 pm

      The best thing to do is roll it yourself – rolled oats on the shelf can go rancid quickly after being flaked. It’s preferable to eat rolled oats since the process of rolling removes some of the bran where much of the phytic acid is found. Read more here; http://www.westonaprice.org/food-features/1893-living-with-phytic-acid

      Reply
      • Lisa C says

        June 11, 2011 at 8:46 pm

        Really? I thought stone cut was supposed to be preferable. Interesting. I’ll check out the article.
        Lisa C recently posted..The Virtues of Butter

        Reply
        • lisa says

          June 13, 2011 at 4:33 am

          It was new information for me as well. But since I don’t make this often I buy the Irish oats that’s supposed to be heat treated at lower temperatures and soak it at least 18 hours ahead. If this was something I made on a weekly basis I would look into the appropriate equipment or find truly raw rolled oats shipped fresh.

          Reply
  6. Cheryl says

    June 4, 2011 at 5:38 pm

    Got here from Cheeseslave. What size is your crockpot?

    Reply
    • Lisa says

      June 5, 2011 at 8:35 pm

      I use a 1 1/2 quart slow cooker for the oatmeal.

      Reply
  7. Ellen says

    June 13, 2011 at 6:01 pm

    finally started cooking the oats this way and its FABULOUS …. saves so much time in the AM! Thanks you again Lisa 🙂

    Reply
  8. Teeth Cleaning Fort Lauderdale says

    December 9, 2011 at 3:07 am

    I think this blog will be useful for many people creating an awareness about the phytic acid. They are quite harmful for the teeth and causes tooth decay. So, it is good to avoid foods which is rich in phytic acid in order to avoid tooth decay. It is good to maintain good oral health in order to save both the teeth and our body. Anyway, thank you for sharing this amazing information with everyone and keep sharing.

    Reply
  9. Dental Implants Glendale says

    December 13, 2011 at 3:03 am

    Those who are looking for good health care for their teeth can go through this post. This is a nice and informative post about overnight slow cooker oatmeal. From this post we can get a view, how to reduce phytic acid. Thanks for sharing it with us.

    Reply
  10. milana says

    January 21, 2013 at 11:28 am

    hi
    thank you for your educational post.
    Can you please advise whether this method of cooking can be done with hot cereal such as like farina, semolina, fine bulgur,or any of the bobs red mill hot cereals?
    Thank You in advance

    Reply
    • Lisa says

      January 24, 2013 at 7:26 pm

      I have not tried it with those grains.
      I found one recipe online for a slow cooker hot cereal; http://www.bobsredmill.com/recipes.php?recipe=6967

      Do a search for slow cooker recipes with a specific grain and you’ll find more links.

      Reply
  11. Deja says

    April 6, 2013 at 3:11 pm

    Hi,

    Do you suggest rinsing the soaked oats before slow cooking them?

    Reply
    • lisa says

      April 11, 2013 at 6:10 pm

      I usually don’t rinse them. If I come across information regarding that I’ll update it in the post. Let us know as well if you learn about rinsing them first.

      Reply
  12. sarah says

    June 12, 2013 at 5:49 am

    I had company over last night and I forgot to turn my slow cooker on before I went to bed so the oatmeal has ben soaking for 24 hrs as of this morning. Can I still use it? Do I have to cook it ASAP? Thanks!

    Reply
    • lisa says

      June 12, 2013 at 6:16 am

      Sure! Many people soak for 24 hours.

      Reply
  13. Hilary says

    February 3, 2014 at 7:10 pm

    If the oatmeal will be cooking on low heat all night within the acidic medium, is it really necessary to do an 8 hour soak beforehand? In other words, can the neutralizing process take place during the long cook on low heat overnight? Thanks.
    Hilary recently posted..Hard boiled eggs in coconut milk curry

    Reply
    • Lisa Rose says

      February 9, 2014 at 8:52 am

      I think the longer you soak the better, so I do start the process 24 hours before.

      Reply
  14. Kim says

    August 24, 2015 at 11:21 am

    I don’t have a small crockpot but I do have a small heavy covered enamel pan and so I’d like to try this in a low oven. Do you think 175 degrees F overnight might work okay? Thanks!

    Reply
  15. Alan says

    March 31, 2016 at 9:18 am

    Hi!

    I’m sorry for asking this in such an old post, but my question is – since you do not rinse them, do the oats keep the vinegary taste from using Apple Cider Vinegar? It’s what I use to create my acidic medium, and I always rinse them (when making them stovetop) because the flavor can be overpowering. I’d like to do everything in one pot, but I can’t make my own yoghurt in order to make whey (yay dorm living).

    Thanks!

    Reply

Trackbacks

  1. Overnight Slow Cooker Oatmeal | Paleo Digest says:
    May 27, 2011 at 8:15 pm

    […] blogs and sites on the web!Overnight Slow Cooker Oatmeal Real Food Digest / Posted on: May 27, 2011Real Food Digest – Cereal and milk is the standard breakfast in many homes, it’s also one of the least […]

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  2. Real Food Link Love: June 2011 | CHEESESLAVE says:
    June 3, 2011 at 8:49 am

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  3. I Prepare an Entire Day's Meals in Under One Hour and You Can Too! - Naturally Persnickety Mom says:
    February 9, 2014 at 11:40 pm

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  7. Breakfast Schedule – Half Indian Cook says:
    July 2, 2020 at 11:46 am

    […] here and the kids are expected to eat what is served without complaint. I do sometimes make soaked oatmeal or add in a treat such as gluten-free toast or leftover pancakes/waffles. Occasionally they are […]

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Lisa Rose is a Nutritional Therapy Practitioner passionate about real food and sustainable living.
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