I had a whole bunch of sad onions that I wanted to caramelize but it is so freakin’ hot! I did not want to cook them on the stovetop and even though I have had terrific success making them in my Crockpot, I was curious to see if you could make them in a pressure cooker. Why not? Everything else has been a huge success!
I started doing a search on the topic and hardly anyone seems to have attempted this method but I did find this post by Serious Eats. Pressure cooker caramelized onions in 30 minutes.
Melt 6 tbsp of butter in an electric or stovetop pressure cooker over medium heat. Add 3 lb of onions and 1/2 tsp baking soda and stir to combine. (I did not add baking soda.) Season with salt and pepper. Cook, stirring, until onions slightly soften and start to release liquid, about 3 minutes. Seal pressure cooker and heat to high pressure for 20 minutes. Release pressure by allowing steam to vent, then remove lid.
Continue cooking with lid off, stirring constantly, until liquid inside has completely reduced and the onions are deep brown and sticky, about 5 minutes.
It took way longer for my onions to caramelize than 5 minutes. More like 20 minutes! They did not get very brown and they turned mushy.
Yes, they were kind of tasty but I have had way better.
Can you make caramelized onions in a pressure cooker? Technically… Yes. Do I recommend it? No. I am glad I tried but as you can see in my video, I was ready to pass out by the end of the process. Oh the things I do for food!
To avoid the heat of summer, make caramelized onions in your slow cooker and not your pressure cooker.