Memorize This Simple Ratio for the Best Overnight Oats (2024)

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Kelli Foster

Kelli FosterSenior Contributing Food Editor

Kelli is a Senior Contributing Food Editor for Kitchn. She's a graduate of the French Culinary Institute and author of the cookbooks, Plant-Based Buddha Bowls, The Probiotic Kitchen, Buddha Bowls, and Everyday Freekeh Meals. She lives in New Jersey.

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updated Aug 17, 2023

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Old-fashioned oats are mixed with milk and yogurt for a portable, make-ahead breakfast that's cool, creamy, and subtly sweet.

Serves4Prep5 minutes

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As the weather warms and the summer months draw closer, my breakfast routine is one of the first things to change. I make the switch from hot coffee to iced, and I swap my warm bowl of oatmeal for a pre-packed jar of refreshingly creamy overnight oats. I highly suggest you do the same.

Overnight oats are the easy, healthy breakfast you’ll always feel good about eating. They’re high in protein and fiber — which will keep you full throughout the morning — and they’re perfect for taking on the go. Here’s our foolproof formula for making the very best overnight oats every time.

What’s the Difference Between Oatmeal and Overnight Oats?

Unlike a bowl of warm oatmeal, overnight oats are meant to be eaten cold, straight from the refrigerator (no reheating necessary). To make them, you’ll soak rolled oats in milk and yogurt overnight, which gives them a soft, slightly toothsome texture that’s ultra-creamy and subtly sweet. In the morning, you’ll add your favorite toppings — fresh or dried fruit, nuts, seeds, and nut butters are all fair game.

Don’t let that overnight soak fool you — overnight oats are incredibly simple to make. They take no more than five minutes to prep, and then the breakfast makes itself while you sleep. If you stir together a batch during your weekend meal prep, you’ll be left with four grab-and-go breakfasts to eat throughout the week (the oats last about four days in the fridge). You can also scale the recipe down and make single servings instead.

What Ingredients Do I Need for Overnight Oats?

  1. Old-fashioned rolled oats. Old-fashioned rolled oats are the best choice for overnight oats. They soak up the liquid overnight, leaving you with a creamy (but not mushy) texture. Save steel-cut and quick-cooking oats for another time.
  2. Milk: You can make overnight oats with any kind of milk — dairy or non-dairy. If using non-dairy milk, it’s best to stick with unsweetened.
  3. Greek yogurt: Not only does Greek yogurt make overnight oats more filling, but it also gives the oats a super-creamy texture. To make the oats vegan, swap in an equal amount of your favorite dairy-free yogurt.
  4. Chia seeds: While chia seeds are an optional ingredient, they add a boost of fiber, protein, and omega-3’s. They plump as they soak, giving the oats a thicker consistency.
  5. Flavorings: This is what makes your oats taste really good. Ground cinnamon is a classic add-in, maple syrup or honey add a hint of sweetness, and a pinch of kosher salt is necessary for a balanced flavor.

What’s the Best Ratio for Overnight Oats?

Making overnight oats is actually as easy as memorizing a simple ratio: Use equal parts old-fashioned rolled oats and milk, plus half as much yogurt. For example, the recipe below calls for 2 cups old-fashioned rolled oats, 2 cups milk, and 1 cup yogurt. From there, you can add whatever toppings you prefer (more on those below).

How Do I Serve Overnight Oats?

While you can certainly eat them as is (just give the bowl a good stir, first), overnight oats are even better with toppings like:

  • Fresh fruit
  • Dried fruit
  • Nuts
  • Seeds
  • Nut butter
  • Granola

While nut butter, dried fruit, some fresh fruit (like blueberries, apples, and citrus) can be added in advance, you’ll want to wait to add delicate or crunchy toppings, such as nuts, seeds, and toasted coconut, until the morning you plan to eat them. When mixed with the oats upfront, the long soak leaves nuts and seeds with a soft, chewy texture. The same goes for most berries, which can get mushy when soaked for too long.

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Overnight Oats Recipe

Old-fashioned oats are mixed with milk and yogurt for a portable, make-ahead breakfast that's cool, creamy, and subtly sweet.

Prep time 5 minutes

Serves 4

Nutritional Info

Ingredients

  • 2 cups

    old-fashioned rolled oats

  • 2 cups

    dairy milk or unsweetened non-dairy milk

  • 1 cup

    plain Greek or non-dairy yogurt

  • 3 tablespoons

    maple syrup or honey

  • 1 tablespoon

    chia seeds (optional)

  • 1/4 teaspoon

    ground cinnamon

  • 1/4 teaspoon

    kosher salt

  • Optional toppings: fruits, nuts, seeds, nut butter

Equipment

  • Large bowl

  • Measuring cups and spoons

  • Spoon

Instructions

Show Images

  1. Add ingredients to a large bowl. Place all the ingredients in a large bowl.

  2. Stir together. Stir together until well combined.

  3. Cover and refrigerate overnight. You can divide the oats into individual jars at this point if desired. Cover and refrigerate for at least 4 hours, preferably overnight.

  4. Stir before serving. Stir again before serving with desired toppings.

Recipe Notes

Storage: Leftovers will keep in the refrigerator for up to 4 days.

At Kitchn, we know how important it is to find recipes that are worth your time. That’s why every tutorial — like this one — features recipes that have been tried and tested by our team of developers and at-home cooks from across the country. Questions or feedback for us? Say hello: recipes@thekitchn.com.

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Memorize This Simple Ratio for the Best Overnight Oats (2024)

FAQs

What is the ratio for overnight oats? ›

Overnight Oats Basic Ratio = 1/2 cup old-fashioned oats + 3/4 cup milk. This is what I usually make for one serving. I'll add other things to this, but I'll share more about that below. If you want to double or triple this to make multiple servings you easily can.

What is the formula for overnight oats? ›

Mix equal parts old-fashioned oats (rolled oats, that is, not quick-cooking-they'll get too mushy) and water along with a pinch of salt in a jar, cover and refrigerate overnight and up to 3 days. For one serving, we recommend using: 1/2 cup oats. 1/2 cup water (or milk or nondairy milk)

What is the trick to overnight oats? ›

Tips & Tricks For Making Delicious Overnight Oats
  1. Start with the Oats. Stick with old-fashioned rolled oats. ...
  2. Add Seeds, Nuts or Fruit. ...
  3. Add Twice as Much Milk as Oats. ...
  4. Stir In Spice & Sweetener. ...
  5. Refrigerate Overnight.

What is the best ratio for oats? ›

Read the instructions on the side of your oatmeal container and do what they say to avoid a pasty, sticky mess or a soupy mush. For steel-cut oats, the ratio is 3/4 to 1 cup of liquid per 1/4 cup of oats. If you are using quick-cooking or rolled oats, the ratio is 1 cup of liquid per 1/2 cup of oats.

What not to add in overnight oats? ›

As Best points out, "some of the worst ingredients that are mistakenly added to healthy overnight oat recipes include chocolate sauce, sugar, syrup, and dried fruit."

What is the best consistency for overnight oats? ›

Follow this tip: Stick with a 2:1 ratio of liquid to oats when making overnight oats to achieve a spoonable, porridge-like consistency.

What is the best oats for overnight oats? ›

The Best Oats for Overnight Oats: Old-fashioned oats, also known as rolled oats, become tender and creamy when soaked. Quick-cooking oats, which are smaller, can end up pasty and steel-cut oats, which are sturdier, stay quite firm even after soaking.

How long do you soak overnight oats for? ›

Chill for at least 4 hours. While two hours might do in a pinch, a longer soak will give the flavors time to meld together better, making for a more delicious breakfast. Temperature matters. Cold milk will take longer to soak into the oats than room-temperature milk.

What to use instead of yogurt in overnight oats? ›

Plant-Based Milk: Almond milk, soy milk, oat milk, coconut milk, or whichever plant-based milk you enjoy most will work. Chia Seeds: Adding chia seeds helps with thickness and creaminess which is extra important when omitting yogurt.

Why add yogurt to overnight oats? ›

Yogurt: Greek yogurt lends richness, flavor, and lots of protein to help you take on the day. Oats: Make sure to use rolled oats. Honey: Honey lends subtle sweetness. Chia seeds: Fiber-rich chia seeds add flavor and nutrition.

Why did my overnight oats not work? ›

If you don't add enough liquid, your oats will be dry and clumpy in the morning, making them less enjoyable to eat. Make sure to add enough milk or yogurt to fully cover your oats and give them a creamy consistency.

Can I eat overnight oats every day? ›

Overnight oats are perfectly safe to be eaten every day. You may even eat them every morning if you like. However, some say that they feel oats give them digestive issues; overnight oats are not unsafe for those without medical conditions that affect digestion.

What is the ratio of oats to liquid for overnight oats? ›

The only ratio you need to remember when making overnight oats is 1:1. You'll soak one part rolled oats with one part liquid overnight. Use less liquid if you want thicker oatmeal, more if you like it runny. You can use water or any type of milk (like almond milk, soy milk, coconut milk, etc.)

Do you stir overnight oats before putting in the fridge? ›

Stir equal parts old-fashioned rolled oats and a liquid such as milk in a jar or container with a lid. If you're adding any sweeteners or fruit like berries, stir those in now as well. Step two: Cover and chill. Cover the container or seal the jar's lid and store in the refrigerator overnight.

What milk is best for overnight oats? ›

Overnight Oats are great with all kinds of milk, dairy (pasteurized) or non-dairy. Feel free to use your favorite! We do not recommend making Overnight Oats with water because it will result in an overly liquid texture. Did this answer your question?

How much liquid for 1 cup of overnight oats? ›

The only ratio you need to remember when making overnight oats is 1:1. You'll soak one part rolled oats with one part liquid overnight. Use less liquid if you want thicker oatmeal, more if you like it runny. You can use water or any type of milk (like almond milk, soy milk, coconut milk, etc.)

Is 1 cup of oats too much? ›

The bottom line. The general oatmeal serving size is around half a cup of uncooked oats or one cup of cooked oatmeal. A serving of oats provides a variety of important nutrients, including protein, vitamins, and minerals.

How much milk for 1 cup of oats? ›

Liquid to Oat Ratio When Making Oatmeal

The liquid to oat ratio for oatmeal when using old fashioned rolled oats is easy to remember: 2:1. Whatever measurement of oats you use, you'll need double the amount of liquid. 1/3 cup of oats means 2/3 cup of liquid. One cup of oats means two cups of liquid etc.

Why add chia seeds overnight oats? ›

But after a little experimentation, I realized that adding chia seeds to overnight oats takes them to a whole new level. They give the oats a delicious thick and creamy texture, sort of like that of chia pudding. They also add protein, fiber, and healthy fats.

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