From inthekitchenwithkath.com
1. Wash the broccoli, peel the stems and cut them into small pieces. Cut the florets into smaller pieces. (This can be done ahead.)
2. About 10 minutes before you want to serve, put 1 cup of water into the Instant Pot. Put a steamer basket in the pot and fill with the broccoli.
3. Seal the lid and set the Pressure Release to "Sealing"
4. Press Manual and use the "-" button to set the time to 0 minutes.
5. When it's done, use the quick release method to let the steam out. Serve!