What am I doing wrong with my rice cooker?

Does your rice cooker have a scale up the inside of the bowl?

With mine, you add a number of scoops of rice, then fill with water up to the correct number on the side of the bowl. Maybe it is just that the manual is badly worded, and this isn't clear?

It's a long shot, I know, but just thought I'd mention it in case you hadn't noticed :)

I observe the same behavior with my own rice cooker. The reason this is happening seems to be due to the simple, but in my opinion incredibly smart principle behind the rice cooker's operation. It just turns off when the bottom of the pot reaches temperatures above the boiling point of water - it means that there is no more water left, so the rice must be cooked.

I learned that the following procedure greatly reduces the amount and crunchiness of the crust:

1. Do not use the 'keep warm' feature of the rice cooker. Immediately after it turns off, I turn it off completely. There's no need to add more heat to the rice now.
2. Take the lid off, let the condensed water drip into the rice. Fluff up the rice. This helps to mix the dryer bottom layers of the rice with the upper layers, which are more moister. Put the lid back on to prevent the rice from drying up.
3. Put the pot on a cold surface (I just put it on the floor). This makes steam condensate under and on the crust at the bottom of the pot and not so much on the lid. The crust gets rehydrated by the condensation.
4. Wait for some time. After about 5-10 minutes the rice will still not be too cold but the crust will be much softer.
5. When taking the rice out of the pot, the rice should be much easier to scrape off the surface. I usually eat the remaining crust (which is now rather pliable) because I find it tasty due to the small amount of Maillard reaction that occurs at the bottom.

Enjoy!

Basic, inexpensive rice cookers do a good job of cooking rice evenly, without a crusty layer at the bottom. I find it rather surprising that a Breville product (which are pricey) would fail to do this basic feature properly.

The crust is generally associated with cooking in a pot on the stove, rather than a rice cooker.

I would make sure that you are using the "cup" that comes with the rice cooker. This cup should be calibrated with the water lines in the main pot, but is probably not a cup in the imperial measurement sense. In other words, do not substitute an imperial cup for the rice cooker cup.

Maybe you are just underresting the rice (a seemingly hard or even stuck layer of rice that becomes palatable when rested is common with simple rice cookers), or using a water ratio that is ill-suited to the actual brand and type of rice you are using?

I originally had issues with a rice cooker and had burned and crusty rice on the bottom and discovered that my house voltage was much higher than it should be and not the rice cookers fault. If your expensive breville is making crusty rice, it's probably defective. You shouldn't have all these issues.

You can try stirring a tablespoon or 2 of oil to the mix after washing but before cooking the rice. I find that this prevents rice from sticking to the bottom. At least to me, the oil does not seem to affect the taste or texture of the rice very much.

As an aside, some people actually enjoy the overcooked "sheet" of rice at the bottom. It may be inevitable that you get at a least a bit of overcooking on the bottom if you enjoy your rice with some bite like me.