Protein Brownie Bites

I made these Protein Brownie Bites during a late night snack attack when the only thing standing between me and a chocolate bar was a very opinionated mixing bowl. Long story short, the bowl won, I improvised, and now these little fudgy fellas show up in my house more often than I water my plants. They taste like dessert, feel like a snack, and I have been known to hide a few behind the yogurt tubs. You know, for scientific purposes.

Why you might fall for these the way I did

I make this when I want something chocolatey that does not sideswipe my afternoon energy. My family goes mad for them because they are bite sized and somehow disappear while the tray is still cooling. Also, no fussy steps; everything happens in one bowl. I used to be grumpy about protein desserts being dry and chalky, but these are properly fudgy. The protein helps them feel a bit more balanced, which means I can have two and not immediately need a nap. And if I am honest, the batter is the real boss here. This is where I usually sneak a taste and then pretend I did not.

What you will need, with my not so secret swaps

1 cup 240 g mashed ripe banana or unsweetened applesauce. I sometimes use applesauce when I am in a hurry and the bananas are still green.
2 large eggs. Or use 2 flax eggs if you are plant based. It works but the bites are a little more tender, so let them cool longer.
1 cup 100 g oat flour. My grandmother always insisted on a fancy brand, but honestly any version works fine. I often blitz rolled oats in a blender.
30 to 35 g chocolate or vanilla whey protein powder about 1 scoop. Plant protein works, but add extra milk because it drinks up moisture.
1/3 cup 35 g unsweetened cocoa powder. Natural or Dutch both work. If you want a quick primer, this is handy cocoa comparison.
1/3 cup 65 g brown sugar or coconut sugar. Maple syrup 80 ml works too, just reduce the milk a bit.
1/2 teaspoon baking powder and 1/4 teaspoon baking soda.
1/4 teaspoon fine sea salt, a tiny pinch more if you are a salty sweet person like me.
1/4 cup 60 ml milk dairy or almond. Start here, add a splash more if your batter seems too thick.
2 tablespoons melted coconut oil or butter or 60 g thick Greek yogurt. Actually, I find the oil gives the best fudgy feel.
1 teaspoon vanilla extract.
Optional bits: a handful of mini chocolate chips, chopped walnuts, 1/2 teaspoon espresso powder, or flaky salt for the top.

How to make them without fuss

Heat your oven to 350 F 175 C. Lightly grease a mini muffin pan or use silicone molds. If you only have a regular muffin pan, fill each cup just under halfway and keep an eye on the time.
In a medium bowl, whisk the mashed banana, eggs, milk, oil, and vanilla until smoothish. Do not worry if small banana bits peek through, they melt into the batter.
Sprinkle in the oat flour, protein powder, cocoa, baking powder, baking soda, salt, and sugar. Stir until just combined. It will look a tad thick and glossy. This is where I usually sneak a taste, again.
Let the batter rest for 5 minutes so the oats hydrate. It always looks a bit weird at this stage; it also always turns out.
Fold in any chocolate chips or nuts. If it feels too stiff, add a teaspoon or two more milk.
Scoop heaping tablespoons into the mini muffin pan, about two thirds full. A small cookie scoop is grand for this.
Bake 9 to 12 minutes, until the edges look set and a toothpick in the center comes out with a smudge of moist crumbs. If it is squeaky clean, you have gone a bit too far, but they will still be tasty.
Cool in the pan for 5 minutes, then gently pop them out and let cool on a rack. Or do what I do and eat one warm with a spoonful of yogurt. On second thought, make that two.

Prefer squares? Spread the batter in a lined 8 inch square pan and bake 14 to 18 minutes. Here is a simple guide for lining pans if parchment always fights you pan lining tutorial.

Notes from my happily messy kitchen

Plant protein is thirstier than whey. Add an extra splash of milk and do not overbake.
Resting the batter for a few minutes helps the oat flour soften. I learned this the hard way when I rushed and the texture was a bit gritty.
Natural cocoa tastes brighter. Dutch reads deeper and smoother. I like half and half if I have both.
If using maple syrup, reduce the milk by about 1 tablespoon. The batter should fall slowly off a spoon, like a lazy ribbon.
Salt on top makes the chocolate pop. Not required, but it is lovely.

Variations I tried so you do not have to experiment alone

Peanut butter swirl: Dollop a teaspoon of warmed peanut butter on each cup, swirl with a toothpick. A wee bit messy, worth it.
Mint choc: Add 1/4 teaspoon peppermint extract and a handful of chips. Festive and fresh.
Mocha vibe: 1 teaspoon espresso powder in the batter. I swear it makes the chocolate taste more chocolatey.
Courgette zucchini sneaky veg: 1/2 cup 60 g finely grated, squeezed dry. Extra moist, pretty great.
What flopped: I tried using only collagen for protein once, no whey or plant powder, and the bites turned rubbery. Not my finest hour, pals.

Gear I actually use

Mini muffin pan, a medium mixing bowl, whisk, rubber spatula, and a small cookie scoop. I once called the scoop essential, then realized a couple of spoons work fine if you do not have one. A fork will whisk in a pinch. Use what you have, mate.

Storing and freezing without drama

Keep your Protein Brownie Bites in an airtight container at room temp for up to 3 days or in the fridge about 5. Freeze for up to 2 months. I like to freeze in a single layer, then bag them so they do not clump together. Reheat in the microwave for 10 to 12 seconds and they taste freshly baked. Though honestly, in my house it never lasts more than a day.

How I love to serve them

Crumbled over thick vanilla yogurt with berries and a drizzle of honey. Breakfast that tastes like dessert.
With coffee after a walk, preferably a cheeky second one while the mug is still warm.
As a lunchbox add in next to strawberries. The kids say it is the best surprise.
Warm with a tiny scoop of ice cream on top. I think it tastes even better the next day, strangely.

Pro tips I learned the crunchy way

I once tried rushing the resting step and regretted it because the oats had not softened. Five minutes seems small, but it matters.
I overbaked a batch while answering the door and they got a bit dry. Pull them when they still look slightly soft in the center.
I forgot to grease the pan once and had to pry them out with a butter knife. Parchment mini liners or silicone molds save the day.
Measure the cocoa and protein powder loosely. Packing the scoop leads to a dusty bite; been there.

FAQ you have actually asked me

Can I use almond flour instead of oat flour
Probably not a straight swap. Almond flour is heavier, so if you try it use 3/4 cup 75 g almond flour and add 1 tablespoon more oat flour or a tablespoon of cornstarch for structure. Texture will be softer.

Do these work dairy free
Yes. Use almond milk or oat milk, coconut oil, and a dairy free protein. The batter may look thicker, add a splash more milk until it looks like brownie batter.

Which protein powder do you use
I tend to reach for a plain whey that is not super sweet. I like to read up before buying, and this overview on baking with cocoa is helpful for balancing flavors cocoa powder 101. For nutrition tracking, I plug ingredients into MyFitnessPal.

How much protein per bite
It depends on your brand of powder and how many chips you toss in. For 24 mini bites using 30 g whey, I get around 4 to 5 g per bite when I run it through a calculator. Do a quick check with your own labels.

Can I make these less sweet
Sure. Reduce the sugar to 1/4 cup 50 g and add 1 tablespoon more milk so the batter stays glossy. The chocolate flavor will read a bit stronger which I like.

Help, my batter is too thick
Add milk a teaspoon at a time until it flows off the spoon in a slow ribbon. Thick is good, paste is not. If it is too thin from the start, sprinkle in a tablespoon of oat flour and give it a minute to hydrate.

Do I need a mixer
Nope. A whisk or even a fork does the job. I have used a wooden spoon, then immediately remembered why I prefer a whisk; fewer lumps.

Small digression before we wrap. I made a batch once while listening to a podcast about bread science and accidentally added the vanilla twice. Best mistake ever. The kitchen smelled like a bakery and my neighbor stopped by to ask what I was making, left with three bites, and texted me later asking for the recipe form my phone number because he lost the link. I sent him this.

When you make these Protein Brownie Bites, tag me mentally with your tweaks. I am always curious what everyone tosses in.