Add the minced shallot, apple cider vinegar, Dijon mustard, maple syrup, sea salt, and olive oil to a mini food processor or blender.
Blend until completely smooth and creamy, about 20–30 seconds.
Taste and adjust seasoning as desired. Add a little extra apple cider vinegar for more brightness or more maple syrup for additional sweetness.
Let the vinaigrette rest for 10 minutes before serving to allow the shallot flavor to mellow and blend into the dressing.
Serve over salads, roasted vegetables, grain bowls, or your favorite fall-inspired dishes.