1 medium head broccoli, washed, tough ends trimmed, and cut into florets (about 12 ounces)
3 ounces formula, water, or breast milk
Fill a large saucepan with water and bring to a boil. Add broccoli and boil until it is bright green and just gives when pierced with a knife, about 3 minutes. Drain and place in a food processor fitted with a blade attachment. With the motor running, add the formula, water, or breast milk. Process until smooth, about 1 minute, stopping to scrape down the sides of the bowl with a rubber spatula. Let cool slightly, then divide into 1/4-cup portions, place in airtight containers, and refrigerate up to 5 days or freeze up to 6 weeks until ready to use.