Slow cooker caramelized onions
Instructions:
- Generously mist the inside of a 5- to 6-quart slow cooker with the spray. Put the butter in the bottom of the cooker and add the onions. Cover and cook on low until the onions are completely soft and deep golden brown, 8 to 10 hours. Do not remove the lid or stir during the first 2 hours, then stir as needed to keep the onions from sticking to the cooker and to help them cook evenly.
- Use at once, or cool, cover, and refrigerate for up to 3 days, or freeze in airtight containers for up to 3 months.