So, I'm on a brownie kick, and am currently playing around with baking batches of brownies in 9"x13" pans. I want each batch to yield 15 brownies (so I'm aiming for brownies that are around 3"x2.5") and I'd like them to look as presentable as possible (e.g. like these guys).

So far, I've read suggestions like:

  • use a warm blade, wiping it down after every cut
  • let the brownies cool in the pan until room temperature (~ 2 hours), chill in the fridge or freezer, then cut
  • use a plastic knife
  • forgo the entire process and bake in muffin tins.

Do any of the experts here have any time-tested advice? Or if people subscribe to any of the above methods, can they elaborate a bit more? For example, if you believe in the warm blade method, what type of blade would you suggest?

The brownie mix I'm using has chocolate chips in it if that helps anyone.

  • 3
    Wouldn't it be easier to yield 16 brownies per batch rather than 15 by cutting it 4 x 4? I say that because it is easier to get similar sized brownies if you are cutting by even numbers. By cutting down the center, then cutting down the center of each sides. If you are cutting in odd numbers (3 x 5) you will have to eyeball where to cut. Unless you are using a ruler :)
    – Jay
    Commented Mar 20, 2012 at 16:52
  • I usually wait for them to cool but I sometimes opt for the 5th option- Forget about the clean squares and eat the hot brownies with a spoon! (with ice cream.) Commented Mar 20, 2012 at 17:00
  • 2
    @Jay: not a bad idea. My 3"x2.6" grid is clearly the by-product of 5 years studying mathematics, however 4x4 grid would yield brownies at 3.25"x2.25", which I think is a good compromise between ease and size... Now, how to cut?
    – StevieP
    Commented Mar 20, 2012 at 17:08

11 Answers 11


a classic European style cheese mongers cutter is perfect. Two wooden dowels with a length of wire between them...actually it is a garrotte for cheese! You have to lift the brownies outof the pan first on foil. Very clean. You can cut when hot and re-cut when cool. Or just use a pastry marker to lay out the grid and then cut to your hearts content.


I can't select either of the above answers as the best answer for the following reason:

The brownie I'm making is meant to be "gooey", and even after cooling for 2 hours, and then chilling in the fridge for another 30 minutes, the the upper-half brownie still remained fudge-like. I ended up using Jay's suggestion to eye-ball a 4x4 grid, however I didn't use a hot knife. I used a plastic knife with an up-and-down sawing motion and got fantastic results. The cuts were as clean as you could ask for, and the entire process didn't take more than 5-10 minutes.

As an aside: I decided to forgo the "aluminum foil sling" and just spray the 9"x13" pan with PAM, line the bottom with parchment paper, and spray it down one more time. The brownie "loaf" came out with zero fuss and had a perfect looking crust.

edit: I plan on experimenting with 2 large metal rulers to score the loaf, instead of eyeballing the grid.

  • +1 for the plastic knife ... my neighbor showed me it, and it's impressive how well they work when you're cutting still-warm brownies. And if you're going to be making the same sized grid on the same sized pan ... make a template; find some cardboard larger than the pan, cut a hole so you can place it over the pan and still cut everything, then mark your grid. When it comes time to cut, place it on, put a straight-edge across it, then cut w/ your plastic knife and it's perfect every time.
    – Joe
    Commented Mar 12, 2013 at 4:22

I have had pretty good success with the warm blade method. For this, I would suggest letting them cool to a little warmer than room temp. Then, using a warm, very thin knife (you can warm it by dipping in a pan of hot water, then wiping dry), cut the brownies. However, DO NOT remove them from the pan yet. Once they are cut, chill them. Then, use a knife to "recut" along your earlier lines. This will take care of any bits that sort of remelted together from chocolate chips and so on. Now, use a thin metal spatula to carefully remove. All that said, I am a big fan of the muffin cup method. Make sure to liberally use a pan spray or butter the compartments so they come out nicely. I usually wouldn't go to all this trouble since people eat brownies too quickly to care what they look like, but if you are doing them to sell or for a fancy event, either of these would work.

  • The trouble is that I am doing this to sell the brownies (at a campus cafe), so I'm feeling like the easiest method is going to be the muffin tin one. Less fuss, provided I get real trigger happy with my can of PAM.
    – StevieP
    Commented Mar 20, 2012 at 17:24
  • Use the mini muffin tins so they are bite sized. That's what they sell in the store. Commented Mar 20, 2012 at 22:05

Have you tried using (unscented) dental floss? That would fix the main issue, that the brownie sticks to the knifes surface on the way down.

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  • I use linen sewing thread for this. It is intended for buttons and buttonholes and is really thick and strong. I also use it for cutting cakes into layers, works very well.
    – RedSonja
    Commented Oct 14, 2021 at 7:09

The main reason why brownies become mal-formed when you cut into them is because the pressure of the knife cutting in the downward motion AND the sticky brownie sticking to the knife and being "dragged" downward as it is being cut.

Generally to get a even nicely shaped brownie cube, the brownie should be baked well enough so that it is not gooey anymore. A lot of recipes are for "really soft gooey at the center" brownies that can become easily malformed. Make sure to bake a brownie sufficiently so that it is done well enough to hold its shape.

You should definitely let the brownie first cool. The cooling process allow the brownie to continue cooking and set. Most brownie recipe also factor in this cooling step into bake time. At that point, you should use a very sharp thin knife(to reduce the amount of pressure). In the past, I have tried the warmed blade method by placing the knife under hot tap warm. I then dry it and lightly oil it with canola oil before cutting into the brownies.

Another thing I've tried in the past is to let the brownies cool in the pan but when it was time to cut the brownie after cooling, I pop the brownie out of the pan first. This makes it easier to cleanly cut AND you will also avoid scratching your brownie pan. But becareful. This cannot be done for all recipes of brownies.

Lastly, as in my comment to your question, it would be easier to evenly cut the brownies into 16 brownies per batch. You would cut it 4 x 4 to yield 2.25 x 3.25 brownies. It is easier to cut 4 x 4 because you can cut down the center of the brownie and then cut down the center of each sides. It is easier to eye ball where the half line is rather than eyeballing how to evenly cut into 5 equal parts if you are doing 3 x 5.

EDIT: According to your comments you decided you might go with the muffin tin method. If you do that, I would suggest instead to go with the muffin's relative, cupcake method. Just use cupcake liners to avoid having to deal with a large amount of nonstick spray.


definitely let them cool, remove them from the baking dish (hopefully you used parchment paper and this step is problem free), then flip them, then cut them as usual. the shiny shell-like top doesn't fracture and get mutilated as much when cut this way.


I let my fudgey brownies cool & then I use a lightly oiled, serrated bread knife with a gentle sawing motion & a gentle downward pressure. I clean then re-oil the knife between cuts. Serrated knives are much better for any cakes or pastries that you do not wish to crush.


I use a very sharp small spatula using the up and down motion after I put in freezer for a half hour or more. Works pretty well (but I am still looking for an even better solution).


Pizza cutter along with other suggestions

  • Sounds like you'll have to pull them out of the pan to do this (otherwise you can't cut to the edge), which means planning ahead and putting foil underneath them.
    – Cascabel
    Commented Mar 12, 2013 at 4:49
  • And by the way, welcome to the site, and thanks for the helpful idea! I haven't tried it, but it sounds like it'd work really well, because it doesn't drag along in the brownies the way a knife does.
    – Cascabel
    Commented Mar 12, 2013 at 5:52

cookie cutters. :) But I have used the plastic knife method with good results. Just make sure they are not too hot, it will melt the plastic.


Try a pizza cutter instead of a knife.

In my kitchen I have two cutters that have three (3) blades each. They blades are adjustable so that they can be spaced to the desired width. With two cutters there are many combinations that can be set and left that way for the next time.

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