In a small jar with a screw-top lid, combine olive oil, vinegar, shallot, sugar, salt, and pepper. Shake vigorously until emulsified. Let sit at room temperature for flavors to meld, approximately 1 hour. Shake vigorously just before using.
Notes
Make-Ahead Tip: Vinaigrette can be made a day in advance and refrigerated. Before using, let come to room temperature, and shake vigorously to combine.
Recipe by TeaTime Magazine at https://teatimemagazine.com/broccoli-kale-slaw-phyllo-cups/