Carmelized onions

I know I’ve read about carmelized onion techniques on HO somewhere, slow cooker in particular, but can’t find a dedicated thread. I’m making some for a frittata, and have plenty of time but got to thinking about using an Instant Pot ( grin).

Anyway, I’m parking some ideas here, and would love some input.

9 hours

12 hours in a slow cooker! Okay, not THAT much time! Maybe not right for a frittata anyway.

Down sides of some short cuts

Previous thread - probably worth combining.

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3 posts were merged into an existing topic: Caramelizing onions in the oven?