Easy Overnight Oats Recipe

✔ Updated October 19, 2026 · basic base ratio, flavor chart + storage times

My easy overnight oats take 10 minutes to stir together at night and are ready to eat straight from the fridge in the morning. One simple base of oats, milk, Greek yogurt and chia works with any flavor you like.

Why You'll Love These Overnight Oats

• No cooking: stir, chill and breakfast is ready when you wake up.
• One easy base that works with almost any fruit, nut butter or spice.
• Meal-prep friendly: make 3 to 5 jars at once and grab one each morning.

The Basic Overnight Oats Ratio

Every flavor of overnight oats starts from the same base. Scale it up for a week of breakfasts or down for a single jar. I make five jars every Sunday night:

Ingredient	1 serving	2 servings	5 servings
Old-fashioned rolled oats	1/2 cup	1 cup	2 1/2 cups
Milk of choice	1/2 to 2/3 cup	1 1/4 cups	3 cups
Greek yogurt	1/4 cup	1/2 cup	1 1/4 cups
Chia seeds	1 tablespoon	2 tablespoons	1/3 cup
Honey or maple syrup	1/2 to 1 tablespoon	1 to 2 tablespoons	3 to 4 tablespoons
Vanilla extract	1/2 teaspoon	1 teaspoon	2 teaspoons

Overnight Oats Flavor Ideas

Stir these into the basic recipe for 2 servings before chilling, and add any fresh fruit or crunchy toppings in the morning.

• Peanut butter and banana: stir in 2 tablespoons peanut butter; top with sliced banana in the morning.
• Blueberry: stir in 1/2 cup blueberries and a little lemon zest. For a warm version, see our baked blueberry oatmeal.
• Apple pie: 1/2 cup grated apple, 1/2 teaspoon cinnamon and a pinch of nutmeg, with chopped walnuts on top.
• Chocolate: 1 1/2 tablespoons unsweetened cocoa powder and an extra teaspoon of sweetener.
• Pumpkin spice: 1/4 cup pumpkin puree and 1/2 teaspoon pumpkin pie spice.
• Tropical: use coconut milk and top with diced mango and toasted coconut.

Step-by-Step Photos

Here's how it comes together. Exact amounts, times and temperatures are in the recipe card below.

Tips for Success

• Start with the 1:1 ratio. Equal parts rolled oats and milk, plus about half as much yogurt, gives a thick, spoonable texture. Add more milk for looser oats.
• Stir well, then stir again. Chia seeds clump if they sit in one spot. Give the jars a second stir after 10 minutes if you can.
• Sweeten lightly. Ripe fruit adds sweetness overnight. Start with 1 tablespoon of honey or maple syrup and add more in the morning if needed.
• Add delicate toppings in the morning. Strawberries and bananas get soft and watery after a day or two, and nuts and granola lose their crunch. Mix in sturdy flavors at night and add fresh toppings when you eat.
• Use jars with tight lids. Wide-mouth 12- to 16-ounce jars leave room to stir and travel well.
• Keep them cold. Overnight oats are made with milk and yogurt, so keep them refrigerated and don't leave them at room temperature for more than 2 hours.

How Long Do Overnight Oats Last?

Overnight oats keep for 3 to 5 days in the refrigerator in covered jars or containers. They thicken a little each day, so I stir in a splash of milk before eating.

Mixed-in fresh berries and bananas soften after a day or two, so for meal prep add them the night before or the morning you eat. Keep the jars cold and don't leave them at room temperature for more than 2 hours; pack an ice pack if you take one to work or school.

Looking for more make-ahead breakfasts? Try our breakfast potluck ideas or banana oatmeal chocolate chip cookies.

Frequently Asked Questions

What is the basic ratio for overnight oats?

The basic ratio is 1 part rolled oats to 1 part milk, plus about half a part of yogurt. For one serving, that's 1/2 cup oats, 1/2 cup milk and 1/4 cup Greek yogurt, with 1 tablespoon of chia seeds if you like. Add a little more milk for thinner oats.

How long do overnight oats last in the fridge?

Overnight oats keep for 3 to 5 days in a covered container in the refrigerator. Add fresh fruit like strawberries and bananas, nuts and granola on the day you eat them for the best texture. Don't leave them out at room temperature for more than 2 hours.

Do you eat overnight oats hot or cold?

Most people eat them cold, straight from the fridge. You can also warm them in the microwave for 1 to 2 minutes, stirring halfway, and add a splash of milk if they are very thick.

Can I use quick oats or steel-cut oats?

Old-fashioned rolled oats work best. Quick or instant oats turn soft and mushy, though they can work for a 2-hour soak. Steel-cut oats stay quite chewy overnight and need more liquid and a longer soak.

Can I make overnight oats without yogurt or chia seeds?

Yes. Without yogurt, use 3/4 cup milk per 1/2 cup oats. Without chia seeds, reduce the milk slightly, because chia absorbs liquid. The oats will be a little thinner but still creamy.