What is your go-to slow or pressure cooker meal that has under 5 ingredients?

Pulled pork:

• 1 red onion, thinly sliced, on the bottom layer
• A piece of pork (shoulder is probably best but I've also done tenderloin), trimmed
• 1/2 cup BBQ sauce poured over the meat

Cook about 3-4h on high or 6-8ish on low. Remove pork, shred with a fork, return to slow cooker & stir everything up together before serving.