Honestly you can top dress them if you want, you can make a tea with them, or ferment them. All are really awesome. If you picked enough to do all three that's what you really want. When I make a tea with dandelion I use 1-2 cups per 5 gallon. Bubble that with some of my EWC, Kelp, Molasses for 2 days. Another tea I do is just letting dandelion sit for 3 days (1-2 cups per 5 gallon). I stir it a few times a day, maybe add a little yarrow , maybe not. I don't let it sit for more than 3 days though. When I ferment dandelion I put a bunch of dandelions in a food processor with water and blend them up. I then transfer that to a half gallon mason jar and add about a tablespoon or 2 of molasses. Let that sit for a month, open jar everyday though. Strain after 30 days, use at a table spoon per gallon. Maybe less maybe more depending on how strong it comes out.
Peace