Remove outer layer of the stalks with a vegetable peeler or knife and cut into 1 inch pieces.
Add broccoli florets and stalks to a food processor and pulse several times until the broccoli is finely chopped, scraping sides if needed. Work in batches if necessary.
Store riced broccoli in an air-tight container or bags in the refrigerator or freezer until ready to use.
Notes
Store riced broccoli in the refrigerator for up to 3 days or in the freezer for up to 2 months.