5-Minute Coffee Overnight Oats

Coffee overnight oats are the grab-and-go breakfast that combines your morning coffee and oatmeal in one jar. Just stir a few staples together the night before, and you wake up to a creamy, caffeinated bowl that tastes like cold brew with a spoon.

No cooking, no waiting for your morning joe to cool. This one is for days when you want breakfast to do the waking up for you.

Why You’ll Love These Coffee Oats

The taste is exactly what you’d hope for: mellow coffee flavor and a gentle sweetness from maple syrup, all wrapped up in thick, almost pudding-like oats. Nothing bitter, just smooth.

The texture stays creamy and satisfying because the Greek yogurt and whole milk do the heavy lifting overnight. I reach for this recipe whenever I want a breakfast that feels a little special but takes almost zero work.

Ingredients

• 1/2 cup rolled oats: old-fashioned oats give the best texture; quick oats turn mushy here.
• 1/2 cup whole milk: any milk works, but whole milk makes them extra creamy.
• 1/4 cup plain Greek yogurt: adds tang and thickens the mixture; dairy-free yogurt is fine too.
• 1 teaspoon instant espresso powder: gives a real coffee kick without watering things down.
• 1 tablespoon maple syrup: honey works if that’s what you have.
• 1/2 teaspoon vanilla extract
• Pinch of salt: barely noticeable, but it pulls the coffee and sweet notes together.
• Toppings: sliced banana, chocolate chips, toasted nuts, or coconut flakes.

Variations / Substitutions

• Make it mocha: stir 1 teaspoon unsweetened cocoa powder into the base before chilling, then top with chocolate chips.
• Swap the sweetener: brown sugar or a splash of vanilla syrup both work well here; start with a little and adjust tomorrow.
• Dairy-free: use oat milk, a thick plant-based yogurt, and skip the honey if needed.
• Boost the protein: whisk in 1 scoop of vanilla or chocolate protein powder with the milk before mixing.

Olympic Chocolate Muffins make a lovely treat to go with these overnight oats.

How to Make Coffee Overnight Oats

Step 1: Stir Together the Base

In a small bowl or directly in your jar, pour 1 tablespoon of hot water over the 1 teaspoon instant espresso powder and stir until it dissolves completely, about 30 seconds. Add the 1/2 cup rolled oats, 1/2 cup milk, 1/4 cup Greek yogurt, 1 tablespoon maple syrup, 1/2 teaspoon vanilla extract, and a pinch of salt. Mix everything together until the oats are coated and no dry pockets remain.

Step 2: Chill the Oats

Cover the jar or bowl and refrigerate for at least 8 hours. This is when the oats soften and absorb all that coffee flavor. The mixture will thicken noticeably, turning from a loose stir to a scoopable, creamy consistency.

Step 3: Top and Serve

In the morning, give the oats a quick stir, then pile on your toppings. Sliced banana, a handful of chocolate chips, and a scatter of toasted nuts are my usual move. Eat it straight from the jar while it’s still cold.

Tips for the Best Coffee Overnight Oats

• Let the mixture sit on the counter for about 5 minutes before putting it in the fridge. One last stir right before you close the lid helps the oats hydrate evenly.
• If you like a stronger coffee flavor, increase the espresso powder to 2 teaspoons. The rest of the liquid stays the same.
• For a thicker, spoonable result, use a little less milk and a little more yogurt. The opposite will give you a looser, drinkable version.
• These oats taste great cold, but you can warm them in the microwave for 60 seconds if that’s your thing.

Scale it to your batch size:

Keeping Coffee Overnight Oats Fresh

• Refrigerate: store in a tightly sealed jar for up to 4 days. The oats will continue to thicken slightly, so you can loosen them with a splash of milk when you’re ready to eat.
• Serve cold: these are designed to be eaten straight from the fridge, but they’re also good after a quick pulse in the microwave.

Frequently Asked Questions

Can I use regular brewed coffee instead of instant espresso?

You can, but it often makes the oats watery. Stick with instant espresso powder or a strong cold brew concentrate and reduce the milk accordingly.

Can I use steel-cut oats?

No, steel-cut oats need cooking. Rolled oats are the only kind that soften properly overnight.

How do I make this completely dairy-free?

Use your favorite non-dairy milk, a plant-based yogurt, and maple syrup instead of honey. The texture will be a touch lighter but still creamy.

Do I have to include the yogurt?

The yogurt adds a lot of body and a pleasant tang. You can leave it out, but the oats will be less thick. Add a little extra oats to compensate if needed.

Can I add protein powder to this?

Yes. Whisk 1 scoop into the milk before mixing everything together. Vanilla and chocolate both pair well with the coffee flavor.

Coffee Overnight Oats Recipe

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Total Time 5 minutes mins

Servings: 1 servings

Calories: 310

Ingredients Method Notes

Ingredients

  

• 1/2 cup rolled oats
• 1/2 cup whole milk
• 1/4 cup plain Greek yogurt
• 1 teaspoon instant espresso powder
• 1 tablespoon maple syrup
• 1/2 teaspoon vanilla extract
• Pinch of salt
• Toppings of choice: sliced banana, chocolate chips, nuts, coconut flakes

Method

 

1. Dissolve the instant espresso powder in 1 tablespoon hot water, then stir in the oats, milk, yogurt, maple syrup, vanilla, and salt until combined.
2. Cover and refrigerate for at least 8 hours, until the oats are thick and creamy.
3. Top with banana, chocolate chips, nuts, or whatever you like, and serve cold.

Notes

These oats need an overnight chill, so plan ahead. They keep well in the fridge for up to 4 days, and you can loosen them with a splash of milk if they thicken too much. For a warm version, microwave for about 60 seconds.