Coffee Overnight Oats

Love your morning cup of coffee but always feel like you’re rushing out the door without breakfast? Coffee overnight oats might just become your new best friend. It’s the perfect marriage of two morning essentials—coffee and breakfast—into one easy, make-ahead recipe.

Think creamy oats soaked in bold, slightly sweetened coffee, tucked away in your fridge overnight, ready to grab and go in the morning. No more sacrificing breakfast for caffeine or the other way around—you get both in one spoonful.

What makes this combo so appealing is not just the flavor (which is rich, smooth, and slightly indulgent), but the simplicity. All you need are a few pantry staples, a bit of your favorite brewed coffee, and a jar. Mix everything together at night, let the fridge do its thing while you sleep, and wake up to a breakfast that tastes like your favorite café treat—only more nourishing and filling.

And let’s be honest—mornings can be chaotic. Whether you’re rushing to get ready for work, get the kids out the door, or just trying to shake off the grogginess, having a no-fuss breakfast already prepared makes a big difference. These oats are also easy to customize depending on how strong you like your coffee flavor, how sweet you want it, or whether you’re going for a boost of protein or a splash of indulgence (hello, chocolate chips or a swirl of almond butter).

If you’re a coffee lover and also someone who craves a quick, satisfying breakfast, coffee overnight oats will check all your boxes. They’re a little energizing, a little creamy, and totally satisfying—basically, the best way to start your day with zero stress and maximum flavor.

Why You’ll Love It

• Two-in-One Morning Boost: Get your caffeine and breakfast fix all in one go—no need to juggle a coffee mug and a bowl of cereal on your way out the door.
• Perfect for Meal Prep: Make a batch or two in advance and you’re set for the next few mornings. Just grab from the fridge, stir, and enjoy.
• Customizable to Your Taste: Prefer it sweet and creamy? Add maple syrup and a splash of milk. Want it strong and bold? Use espresso and cut back on sweeteners. The options are endless.
• Nutritious and Filling: Packed with fiber, healthy carbs, and depending on your add-ins—protein and healthy fats too—it’ll keep you full and fueled until lunch.
• Tastes Like a Treat: With the coffee flavor infused in every bite, it’s like eating a coffeehouse dessert for breakfast, without the guilt.

Ingredient List

• ½ cup old-fashioned rolled oats
• ½ cup brewed coffee (cooled)
• ½ cup milk of choice (dairy or non-dairy)
• 1–2 teaspoons maple syrup or honey (to taste)
• 1 tablespoon chia seeds (optional, for extra thickness and fiber)
• ¼ teaspoon vanilla extract
• Pinch of salt

Optional Add-Ins & Toppings:

• 1–2 tablespoons Greek yogurt or protein powder (for extra protein)
• Dash of cinnamon
• Chocolate chips or cacao nibs
• Sliced banana or berries
• Nut butter or crushed nuts

Ingredient Notes

• Brewed coffee: Let it cool before mixing—hot coffee can make the oats mushy. Cold brew works beautifully too for a smoother taste.
• Rolled oats: Stick with old-fashioned oats. Quick oats can get too soft, and steel-cut won’t soften enough overnight.
• Chia seeds: These help thicken the oats and add a nutritional boost.
• Maple syrup/honey: Adjust sweetness based on how strong or bitter your coffee is.
• Greek yogurt/protein powder: Great if you want a more filling, protein-packed breakfast.
• Toppings: Don’t skip them! A drizzle of almond butter or a handful of fresh fruit adds texture and flavor.

Kitchen Equipment Needed

• Mason jar or airtight container – For mixing and storing your oats overnight. I love using 12 oz mason jars—they’re the perfect size and look cute in the fridge.
• Spoon – To stir everything together. Nothing fancy needed here, just make sure everything is well combined.
• Measuring cups and spoons – Helps keep the ratios just right, especially for the oats, coffee, and milk.
• Coffee maker or French press – Any coffee brewing method works! I personally love using cold brew for an extra smooth flavor.
• Refrigerator – Essential for letting the oats soak and chill overnight.

Kitchen Equipment Needed

• Mason jar or small container with lid – For mixing and storing overnight oats. I love wide-mouth mason jars because they’re easy to fill, stir, and eat from.
• Spoon – For stirring everything together. A small rubber spatula works well too if you’re adding sticky ingredients like nut butter.
• Measuring cups and spoons – Keeps your oat-to-liquid ratio on point, especially when prepping multiple servings.
• Coffee maker or French press – To brew your coffee. I personally like using a French press for a richer, bolder flavor.
• Fridge – To let the oats chill and soak overnight until they’re perfectly creamy by morning.

Instructions

Step 1: Brew and Cool Your Coffee

• Brew about ½ cup of coffee using your preferred method—drip, French press, or even cold brew concentrate diluted with water.
• Let it cool completely before using. You can pop it in the fridge or freezer for a few minutes to speed things up.

Pro Tip:
Use a bold brew or espresso if you love a stronger coffee flavor in your oats.

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Step 2: Measure and Add Dry Ingredients

• In a clean mason jar or airtight container, add:
  • ½ cup rolled oats
  • 1 tablespoon chia seeds (if using)
  • Pinch of salt
  • Dash of cinnamon or protein powder, if desired
• Stir the dry ingredients together with a spoon to evenly distribute everything.

Pro Tip:
Mix dry ingredients first to help prevent clumping when the liquids are added.

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Step 3: Add the Wet Ingredients

• Pour in ½ cup of the cooled coffee and ½ cup of milk of your choice.
• Add 1–2 teaspoons of maple syrup (or honey) and ¼ teaspoon vanilla extract.
• Stir everything really well, making sure to scrape the bottom and sides of the jar to fully incorporate all the oats and chia seeds.

Pro Tip:
If using a protein powder, whisk it with the milk first to prevent lumps before adding it in.

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Step 4: Seal and Chill

• Tightly seal the jar or container with a lid.
• Place it in the fridge for at least 4 hours, but preferably overnight, to allow the oats and chia seeds to soak and thicken.

Pro Tip:
Give the jar a quick shake or stir about 30 minutes after placing it in the fridge if you can—this helps distribute the chia seeds more evenly.

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Step 5: Stir, Top, and Serve

• In the morning, take out your jar and give the oats a good stir. If it’s too thick, add a splash of milk to loosen it up.
• Add your favorite toppings: banana slices, a dollop of almond butter, a sprinkle of chocolate chips, or fresh berries.

Pro Tip:
Top it with a few crushed walnuts or cacao nibs for crunch and an extra energy boost!

Tips and Tricks for Success

• Use cooled coffee: Always let your coffee cool before mixing. Hot coffee can partially cook the oats and throw off the texture.
• Stir well before chilling: Make sure everything is fully combined to prevent dry pockets of oats or chia clumps.
• Taste and adjust sweetness: Depending on how bold your coffee is, you might want a little more or less maple syrup. Taste after mixing!
• Add toppings just before eating: This keeps everything fresh and prevents things like fruit or nuts from getting soggy overnight.
• Make multiple jars at once: These oats last 3–4 days in the fridge, so prep a few in one go for easy breakfasts all week.

Ingredient Substitutions and Variations

• Oats: Use gluten-free oats if you’re sensitive to gluten. Avoid steel-cut—they won’t soften properly overnight.
• Coffee: Swap brewed coffee with cold brew concentrate for a stronger, smoother flavor. Decaf works too if you’re avoiding caffeine.
• Milk: Any milk works—almond, oat, soy, cow’s milk. Coconut milk gives it a richer, creamier vibe.
• Sweeteners: Try agave syrup, brown sugar, or flavored coffee syrups instead of maple syrup or honey.
• Add-ins: Stir in cocoa powder for a mocha flavor, or a tablespoon of peanut butter for extra richness.
• Protein boost: Mix in Greek yogurt, collagen peptides, or vanilla protein powder to make it more filling.
• Dessert twist: Add mini chocolate chips, a swirl of Nutella, or crushed biscotti for a treat-like version.

Serving Suggestions

• Straight from the fridge: These oats are best enjoyed cold. Just give them a stir and dig in—perfect for hot mornings when you want something refreshing and energizing.
• Top with fruit and crunch: Add sliced bananas, strawberries, or blueberries with a sprinkle of granola or chopped nuts for texture and natural sweetness.
• Swirl in something creamy: A spoonful of Greek yogurt, almond butter, or coconut cream makes it extra indulgent and satisfying.
• Make it a breakfast bowl: Pour the oats into a small bowl, then go wild with toppings—think cacao nibs, shredded coconut, or even a drizzle of caramel or chocolate sauce.
• My personal favorite: I love topping mine with banana slices, a handful of walnuts, and just a touch of cinnamon—it’s like a cozy café breakfast in a jar!

Storage and Reheating Instructions

• Refrigerator: Store in a sealed jar or airtight container for up to 4 days. Perfect for prepping a few days ahead!
• Stir before serving: The oats may thicken as they sit—just give them a good stir before eating. Add a splash of milk if needed to loosen the texture.
• Not for reheating: These are meant to be eaten cold. Heating can change the texture and take away from the refreshing, creamy feel.
• Toppings tip: Add fresh fruit, nuts, or anything crunchy just before serving to keep them from getting soggy.

Frequently Asked Questions

Can I use instant coffee instead of brewed coffee?

Yes! Just dissolve 1–2 teaspoons of instant coffee in ½ cup of warm water and let it cool before using. It’s a quick and easy swap that still delivers that bold coffee flavor.

Do I have to use chia seeds?

Not at all. Chia seeds help thicken the oats and add fiber, but if you don’t have them, just leave them out. The oats will still soften nicely overnight—just slightly less thick.

Can I make this recipe dairy-free?

Absolutely! Use any plant-based milk like almond, oat, soy, or coconut milk. Just make sure it’s unsweetened if you’re watching sugar levels.

How long do these oats last in the fridge?

They’ll stay fresh for 3 to 4 days when stored in an airtight container. Great for making a few jars ahead of a busy week!

What if I don’t like strong coffee?

Try using a lighter roast or dilute your coffee a bit more before adding it in. You can also balance it out with more milk or sweetener to tone down the bitterness.

Can I add protein powder?

Yes! Just mix the protein powder with your milk before adding it to avoid clumps. Vanilla or chocolate flavors both work great with the coffee vibe.

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Did you try this recipe? Let me know in the comments how it turned out!

Don’t forget to share your photos on Instagram and tag me @tasiahub_ or use the hashtag #tasiahub. I’d love to see your creations!