Prepare all veggies and add to a bowl. I used this mandolin and it went so fast! Otherwise, a sharp knife and some patience, or a food processor with a grating attachment would work brilliantly.
Whisk dressing ingredients in a small mixing bowl and taste and adjust seasonings as needed.
Add dressing to veggies, along with sunflower seeds, and toss to coat. Chill for at least 1 hour before serving, preferably 2-3 hours or up to overnight.
Store in the fridge covered for a few days, though best within the first 24-48 hours.
Notes
*Loosely adapted from my whole foods idol, The First Mess *Nutrition information is a rough estimate.