I'm new to cooking with beans, and I accidentally cooked dried kidney beans with my chili without soaking them first. Do I just let them cook for a long period of time, or am I in danger of getting poisoned since they were not soaked beforehand?
The issue isn’t so much the soak but the cooking.
You need to boil the beans for 10 minutes to inactivate the toxin in them. Cooking at a lower temperature, such as with a slow cooker will not do this.
The problem here is that I don’t know how well the beans will cook if they’re not yet hydrated. You may need to cook them for a bit then bring it to a hard boil for 10 minutes
Oh my goodness! Kidney beans are not toxic! I do this all the time because I don't plan ahead.
If you add dry beans they will drink up some of the cooking liquid. So you need to add enough extra for them to drink. You will need to cook them longer too. That is fine because the longer you cook them the better they are. I routinely cook red kidney beans overnight. I used to cook them overnight and all the next day and then eat them for dinner. If you do this, smoked pork shank or ham hocks are great with it.