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 best ratio for overnight oats? ›

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.

What is the basic formula for overnight oats? ›

The base “recipe” for overnight oats is so simple! I recommend a 1:1 ratio of rolled oats to milk, plus half as much yogurt. So for 1/2 cup of oats, I use 1/2 cup of milk + 1/4 cup of yogurt (or an additional 1/4 cup of milk).

What is the best portion size for overnight oats? ›

Overnight Oats Basic Ratio = 1/2 cup old-fashioned oats + 3/4 cup milk.

What is the best oatmeal ratio? ›

3 Steps for a Perfect Pot of Oatmeal

You want a three-to-two ratio of water to rolled oats. Bringing the water to a boil before you add the oats keeps them from absorbing too much water. Add the oats at a simmer. Once boiling, drop the temp down to a gentle simmer and add the 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's the ratio of water to 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 is the secret to overnight oats? ›

Add Twice as Much Milk as Oats

Whether you prefer whole milk, rice milk or coconut milk, you can use it. Just make sure to add twice as much milk as oats. Note: You can also use whey, buttermilk or thinned yogurt for a tangier flavor.

Are oats overnight actually healthy? ›

Overnight oats offer a range of health benefits, due to their rich fibre and protein content. They also contain a number of vitamins and minerals, some of which include manganese, phosphorus, magnesium, copper, iron and zinc. This makes overnight oats healthy for your gut, as well as for overall health and well-being.

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?

Is oatmeal a 2 1 ratio? ›

The ratio is 1:2. The usual serving size is ½ cup oats to 1 cup of water. You could switch the water for milk, but it may take longer to cook, so I usually just stick with water and add a splash for milk at the end for the best consistency, or do a mix or water and milk as pictured below.

What to use instead of yogurt in overnight oats? ›

Overnight oats are commonly prepared using yogurt or vegan yogurt to create an extra creamy texture. However, yogurt is not mandatory and you can achieve the same results by using nut or seed butter as an alternative.

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

Instructions
  1. In a jar or bowl, combine the oats, milk, yogurt, maple syrup, chia seeds, vanilla cinnamon, and sea salt.
  2. Stir well to make sure all the ingredients are combined. Cover with a lid and place in the refrigerator overnight.
  3. In the morning, remove from the refrigerator and stir.
Sep 13, 2021

How much liquid for 1 cup of 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)

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.

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