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These small batch brownies bake in a loaf pan and give you eight fudgy squares instead of a full tray you will be picking at all week. One bowl, one egg, no mixer, and no chopping up chocolate bars to melt. The cocoa powder does all the work here, which is exactly why these come out so dark and so fudgy.
I have tested this one more than 15 times (for research, obviously) and this is the version I finally stopped fiddling with. If you are feeding a crowd instead, my world’s best fudgy brownies recipe is a play on this recipe (with an added bonus) scaled all the way up. But on a regular Tuesday night, this is the one I actually make.
Quick Look: Small Batch Brownies in a Loaf Pan
- 🍫 What it is: Fudgy brownies baked in a loaf pan, one bowl, no mixer.
- ⭐ Why it works: Butter and oil together. Butter for flavor, oil for brownies that stay moist after cooling.
- 💛 Why you’ll love it: Tested 15+ times for this exact size. No full pan sitting out for four days.
- ⚠️ What to watch for: Dry brownies mean overbaked. Pull them when the toothpick shows moist crumbs, not wet batter.
- 🍳 Pan notes: A parchment-lined 9×5 or 8×5 loaf pan. Doubling goes in an 8×8, check at 25–30 minutes.
- ❄️ Make ahead: Airtight at room temp 4 days, or frozen 2 months. Better the next day.
Why These Small Batch Brownies Work
Most brownie recipes this size ask you to melt down a chocolate bar first. This one does not, and that is on purpose. Cocoa powder gives you a darker, more intense chocolate flavor for a fraction of the effort, and it is why these taste like proper homemade brownies rather than something scaled down, and it is the reason a half batch of brownies this small still tastes like something out of a bakery case.
- Butter and oil together. Butter is for flavor, oil is for staying soft. Most recipes pick one. Using both is why these are still fudgy on day three instead of firm and dry.
- Two sugars, whisked hard. Granulated sugar builds the crackly top, brown sugar brings the chew. Whisking them into the hot butter for a full three minutes is the entire trick, and it is the step people rush (don’t do it too!)
- One egg, one bowl. No mixer, no creaming, no second dish to wash. If you have one lonely egg left in the carton, you can still make these.
- The loaf pan portions them for you. Eight squares, and every single one of them gets an edge.
- Cocoa powder only. No chopping, no melting, no double boiler, no bowl balanced over a pot of simmering water.
Table of Contents
Key Ingredients
Here is what goes in. Full measurements are in the recipe card at the bottom.
- Chocolate chunks. I chop up a bar rather than using chips. Chips are formulated to hold their shape, a chopped bar melts into actual pools, and in a brownie this small you notice the difference.
- Butter and oil. Four tablespoons of butter for flavor and one tablespoon of neutral oil for staying power. If you want to push the flavor further, the same combination is what makes my fudgy brown butter brownies with crinkly tops so good.
- Granulated and brown sugar. You need both. Granulated gives you the shiny crackly top and brown sugar gives you the chew. Swapping to all of one or all of the other changes the texture noticeably.
- One large egg. Room temperature if you can manage it. If yours is straight from the fridge, sit it in a mug of warm water for ten minutes while you melt the butter.
- Vanilla extract. A teaspoon. It rounds out the cocoa so the chocolate reads rich instead of flat.
- Cocoa powder. I use Dutch process because it is deeper and less sharp, and it is doing all the chocolate work in this recipe since there is no melted chocolate. If you want to take it even darker, my midnight black cocoa brownies push this same idea as far as it goes.
- All purpose flour. Only a quarter cup. That small amount is the whole difference between fudgy and cakey, which is why I am about to nag you about weighing it.
- Salt. A quarter teaspoon in the batter, plus flaky sea salt on top if you like that sweet and salty thing.
Substitutions and Additions
A few of these I have tested, a few I have not, and I will tell you which is which.
- Natural cocoa instead of Dutch process. Works fine. The brownies come out a little lighter in color and slightly sharper in flavor. Tested.
- Chocolate chips instead of a chopped bar. Also fine. You lose the melty pools and gain nothing, but nothing breaks. Tested.
- Espresso powder. Half a teaspoon whisked in with the cocoa. You will not taste coffee, the chocolate just gets louder. This is my favorite addition to these.
- A swirl of Nutella or cookie butter dolloped on top and dragged through with a knife before baking. If you would rather have it built into the recipe properly, I have small batch Nutella brownies in a loaf pan and small batch cookie butter brownies already worked out.
- Frosting. These are rich enough without it, but if you want them frosted my brownie frosting that actually hardens sets firm enough to stack them.
- What I would skip. Do not leave out the oil, they firm up much faster without it. And do not swap the cocoa for melted chocolate, it throws the fat ratio off and you end up with something greasy.
How To Make Small Batch Brownies
- Melt the butter and oil together in a large microwave safe bowl. Thirty second bursts, stirring between, or do it on the stove and pour it into a bowl.
- Whisk in both sugars and keep whisking for a full three minutes. Set a timer, because this feels much longer than it is. The mixture will go from grainy to thick and glossy, and that is the crackly top forming. Then add the egg and vanilla and whisk just until combined. Once the egg is in you want to stop working the batter.
- Fold in the flour, cocoa powder and salt until the last streaks of flour disappear and no further. Overmixing here is what makes brownies tough. Then mix through the chopped chocolate, saving a few pieces to press into the top.
- Spread into the pan and bake for 25 to 30 minutes. Start checking at 25. A toothpick in the center should come out with moist crumbs clinging to it, not wet batter and not clean.
- Cool completely in the pan. All the way. I know. This is what sets the fudgy texture and gives you clean squares instead of a delicious pile.
- Once fully cooled slice and enjoy the best small batch brownies ever!
Expert Tips
- Let them cool all the way before slicing. Warm brownies fall apart. Cool brownies cut into clean squares. This is the only genuinely hard part of the recipe.
- Start checking at 25 minutes but expect up to 35. A thin loaf pan bake is unusually sensitive to your oven and your pan. A reader made these exactly as written and needed the full 35, and she was right to keep going. Trust the toothpick, not the clock.
- Weigh your flour if you have a scale. A quarter cup is a small enough amount that a heavy scoop can pick up half again as much as the recipe wants, and in a batter this small that is the difference between fudgy and cakey.
Baking for a crowd instead? Scale up to my full pan Starbucks copycat brownies, which makes nine squares in an 8×8 and doubles cleanly into a 9×13.
Small BAtch Brownies Faqs
Eight. The loaf pan slices into eight squares, which is about right for two people to have brownies for a few days without a full tray sitting on the counter. If you are specifically after brownies for two, cut the loaf into four larger squares instead of eight and that is a generous serving each with one spare. Same batter, same bake, bigger pieces. And if you want to go smaller still, my Single Serve Microwave Brownie is built for exactly one sitting.
Use metal if you have it. Glass heats slowly and then holds onto that heat, so the edges set long before the middle does and you end up either pulling them underbaked in the center or overbaking the outside trying to fix it. This is far and away the most common reason a small batch brownie comes out raw in the middle, and almost nobody mentions it. If glass is what you have, drop your oven to 315°F and start checking at 30 minutes instead.
Yes. Double every ingredient and bake it in an 8×8 inch pan for 25 to 30 minutes, checking the same way. This is worth knowing in reverse too. A loaf pan is almost exactly half the surface area of an 8×8, so if you came here looking for a half batch brownie recipe, what you are reading is already it.
Airtight container at room temperature for up to four days, and I genuinely think they are better on day two once the texture settles. To freeze, wrap them individually and they keep for two months. You can eat them straight from frozen, which is better than it sounds, or microwave one for fifteen seconds, or just leave it on the counter for an hour.
Almost always overbaking, and usually by only two or three minutes. The pan keeps cooking them after they come out of the oven, so brownies that look perfect while they are still in there are already past it. The other usual culprit is too much flour from scooping straight out of the bag. If you want the longer version of why cocoa brownies go cakey, I break it down properly in how to make chewy brownies with cocoa powder.
More Small BAtch Recipe Favorites
If you make these small batch brownies, come back and leave a star rating and a comment. I read every single one, and the notes people leave about their oven and their pan are how this recipe keeps getting better.
Small Batch Brownies in a Loaf Pan
Ingredients
- 4 tbsp butter
- 1 tbsp oil vegetable or canola
- 1/3 cup granulated sugar
- 1/4 cup brown sugar
- 1 egg
- 1 tsp vanilla extract
- 1/4 tsp salt
- 1/4 cup all purpose flour
- 1/3 cup cocoa powder
- 1/4 cup semi-sweet chocolate chunks
- (Optional) Sea salt flakes for topping
Instructions
- Preheat the oven to 325F, line a 9×5 or an 8×5 baking pan with parchment paper, then set aside.
- In a large bowl, melt the butter and oil in the microwave or on the stovetop in a medium saucepan.4 tbsp butter, 1 tbsp oil
- If you melted the butter in a saucepan, transfer it to a large bowl. If not, add the granulated and brown sugar to the butter and whisk until combined.1/3 cup granulated sugar, 1/4 cup brown sugar
- Add the egg and vanilla and whisk to combine. Whisk in the flour, cocoa powder, and salt until the flour mixture disappears. Fold in the chocolate chunks, then pour the brownie batter into the prepared baking pan. Spread the brownie batter to cover the full loaf pan and bake in the preheated oven for 25 minutes.1 egg, 1 tsp vanilla extract, 1/4 tsp salt, 1/4 cup all purpose flour, 1/3 cup cocoa powder, 1/4 cup semi-sweet chocolate chunks
- You will know your brownies are ready when you insert a toothpick in the center and it comes out with just a few wet crumbs. Let the brownies cool down completely before slicing into them. Top with salt flakes if you want and enjoy!(Optional) Sea salt flakes
Video
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
These can’t be good for a diet! Quick and super moist. Enough for 2.
Best to have on cheat days 😁
thank you sooo much, perfect brownie!!!
you’re welcome! 🙂
So yummy and so easy to make. I top mine with extra chocolate chips. This is now my “go to” brownie recipes forever and always. People go crazy for them.
I’m happy these are your go-to brownies!! I’m glad you enjoyed them 😁
These sound perfect!! My husband doesn’t have a sweet tooth so a small batch recipe is just what I was looking for.
enjoy! 🙂
Made these last night as a Super Bowl treat for me and my hubby. They were excellent!! Flavor was very chocolatey, texture was fudgy and NOT cakey at all. DELICIOUS!! I baked mine in a 9×5 pan for 19 minutes and they were perfect!! Thank you, so much, for another great and easy recipe 👍🏼👍🏼
You’re welcome! Glad y’all liked the recipe 😁
These look incredible and I’m so excited to test out the recipe. I’m trying to avoid industrialized oils. Could you use olive or avocado oil instead of vegetable / canola?
Yes you can 🙂
These are so so delicious!! Thanks for an amazing recipe, as always. I’d love the full 8×8 pan recipe too, do you think I can just double?
Hi Trang! Thank you so much 🙂 You can and to double the recipe, you can click on the 2x button on the recipe card (it automatically adjusts the measurements).
I made these in the 8×4” pan and baked for 29 minutes. Absolutely amazing! I only had Trader Joe’s Cacao powder and was a little worried they would be bitter, but to my delight they were delicious. Just the right size for 2 people. Thank you for sharing this recipe.
Glad to hear you enjoyed these Cat!!
A friend made these for me and they were absolutely delicious!!!! I was just wondering what brand of cocoa powder you use? Thanks for sharing your talent!
That’s awesome! I would use any high-quality cocoa powder for this recipe! It is what will give us the best chocolatey brownie flavor.😁
Amazing recipe! It tastes like a semi sweet or dark chocolate brownie, which I love. My kids like a little more milk chocolate, so do you think I could add a tbsp. Or 2 of heavy cream to lighten it up, or would Dutch processed cocoa be better?
I would reduce the sugar to 1/4 cup and use milk chocolate chips instead! I hope that helps 🙂
These are not only the perfect amount of brownie, but they are delicious!! I added the oil at the same time as the butter, used unsweetened cocoa powder and bitter-sweet chocolate chunks (because that’s what I had on hand) and oh my goodness!!! They are delicious!!!