Brownie Batter Overnight Oats… oh man, where do I even start?
If you’re like me and mornings can sometimes be, well, a disaster zone, this one’s a total lifesaver. Tired of boring yogurt cups or bland oatmeal? Same.
I wanted something chocolatey for breakfast (yep, chocolate before 10 am, no judgment), but not loaded with sugar. That’s how I got hooked on these brownie batter overnight oats. They’re simple, you can make them vegan, and best part?
You wake up to breakfast that basically tastes like dessert, but it’s healthy-ish. Total win.

Ingredients Needed for Brownie Overnight Oats
Okay, let’s get real here—you don’t need anything fancy. You probably have most of this just sitting in your pantry. Here’s what I grab for my brownie batter overnight oats:
- Old-fashioned rolled oats. Steel-cut is a no from me (it doesn’t soak up right).
- Unsweetened cocoa powder. If you really wanna go rich, use dark cocoa.
- Chia seeds! For the thick, pudding vibe and some fiber action.
- Maple syrup or agave. Honey if you don’t need it vegan.
- Non-dairy milk—I love almond or oat milk, but you do you.
- Vanilla extract, a splash for that bakery aroma.
- Pinch of salt. It totally makes the chocolate pop.
- Mini chocolate chips. Optional but… not really optional if you ask me.
That’s pretty much it! You’ll mix this all up, and honestly, it takes less time than scrolling through TikTok.
How to make these vegan brownie batter overnight oats
Alright, buckle up, because this process is laughably easy. Seriously—no cooking, no baking, just pure lazy-night magic.
First, I grab a big ol’ jar or Mason jar (or just a bowl, if you wanna keep it old school) and pour in half a cup of oats. Toss in about two tablespoons of cocoa powder. I know it looks like a lot, but trust me, go big or go home, right?
Then add in one tablespoon of chia seeds, a spoonful of maple syrup, a third cup of non-dairy milk, splash of vanilla, and that tiny pinch of salt. Stir it up until it’s nice and chocolatey.
This is my favorite part: sprinkle a little handful of mini chocolate chips on top. Cover the jar, pop it into your fridge, and forget about it till morning.
By breakfast, it’s creamy, decadent, and almost sinful (but it’s oats, so you’re basically a health guru).
“I was super skeptical but wow, these brownie batter overnight oats tasted exactly like dessert. And they actually kept me full until lunch!” – Jamie H.
Optional Add-Ins for the Overnight Oats
Alright, so maybe you’re the kind of person who likes a little something extra.
I totally get that. Here’s where you can go wild with your brownie batter overnight oats.
Add in a scoop of plant-based protein powder if you wanna make it more filling. Sometimes I throw in chopped walnuts for a little crunch, or swirl in peanut butter for a Reese’s kind of situation (seriously, do it). Coconut flakes are actually pretty dang amazing with chocolate too—kind of like an Almond Joy bar without the guilt.
Some days I’ll even mash half a banana and mix that in before the oats soak. Makes it extra moist, and you get that subtle banana bread vibe. So basically, don’t be afraid to put your own twist on everything.

How Long Do Overnight Oats Need to Soak?
Okay, so here’s the million-dollar question about brownie batter overnight oats… how long do they actually need to sit? I’ll be honest, I’ve been impatient, tried them after like three hours, and they were okay. Sorta chewy. But if you let them go overnight (I usually just do 6-8 hours), that’s when the magic happens.
The oats get super creamy, and the flavors blend together in the coolest way. If you want them thicker, add a smidge less milk. Wanna drink it like a shake? Add a splash more milk in the morning and stir.
If you forget and only have a couple hours, don’t worry. They’re still edible. They’re just not as “five-star restaurant” level as when they soak all night.
Tips, Tricks and Substitutions
Let me give you my not-so-secret plays with these brownie batter overnight oats. First off, the kind of oats totally matters for texture. I swear by rolled oats. Quick oats get way too mushy. Steel-cut oats, as I mentioned… just don’t.
If you’re out of maple syrup, brown sugar or date syrup works fine in a pinch, though you might need to adjust the milk. Swapping in Greek yogurt for half the milk makes it creamier and gives you a protein boost. (But yeah, dairy if you’re not vegan.)
Don’t skip the pinch of salt. Seriously, it makes everything taste more chocolatey. Game changer.
If you don’t have a jar, a plastic container with a tight lid works just as well. Heck, I’ve even made these in a coffee mug—college days, right?
Oh, and if you want that real cake batter explosion, add a dollop of almond butter right before eating. It’s ridiculous.
Serving Suggestions
Here are a few ways I’ve served my brownie batter overnight oats when I wanted to jazz things up:
- Top with fresh berries for color and a little tartness.
- Add a drizzle of warm almond butter (gets you that brownie frosting feel).
- Serve with a dollop of coconut whipped cream on weekends for, like, the ultimate brunch dish.
- Chopped pecans or walnuts make it even fancier, if you’re feeling so inclined.
Common Questions
Q: Can I use instant oats?
A: You can, but they get mushy. Rolled oats are best for brownie batter overnight oats. Personal preference, though.
Q: Is it okay to use regular milk instead of non-dairy?
A: Totally! I just prefer non-dairy but it works either way.
Q: Can I heat up my overnight oats?
A: Yup, microwave for 30-45 seconds if you want ‘em warm and gooey like a baked brownie—but they’re great cold too.
Q: Do I have to add chocolate chips?
A: No, but…why wouldn’t you? It’s called brownie batter overnight oats for a reason.
Q: How long will these last in the fridge?
A: Easy answer: three days max, covered. After that, they get kind of sad and soggy.
So that’s everything you need to make brownie batter overnight oats that’ll make your breakfast feel like a treat. No chef hat required, promise. Give ‘em a try and tell me if your mornings don’t feel just a smidge more magical!

Brownie Batter Overnight Oats
Ingredients
Equipment
Method
- Add oats, protein powder, almond milk, cocoa powder, maple syrup, vanilla and sea salt into a bowl or jar. Stir well to combine, until all the protein powder has dissolved.
- Seal container with a lid and place in the fridge overnight.
- Take the container out of the fridge the next morning and stir the mixture. You’ll notice that the oats soak up a lot of the liquid so you may want to add a little more almond milk before serving.
- Portion overnight oats into two containers, top each with chocolate chips, chopped walnuts and peanut butter, if using. Enjoy.