Preheat a grill to medium-high (400 Degrees F to 450 Degrees F) . Drizzle zucchini, eggplant, onion, and bell peppers evenly with 2 Tb. olive oil; sprinkle with 1 1/2 tsp. salt. Arrange sliced onions on oiled grill grates over lit side of grill. Grill covered until onion slices are slightly charred on both sids, about 3 minutes per side. Transfer to onlit side of grill; grill, covered, until softened, about 8 minutes.
Add bell peppers, zucchini, and eggplnt to lit side of grill. Grill, covered, , until slightly charred an softened, about 3 minutes per side, flipping vegetables halfway through cooking time. Let cool for 10 minutes.
Each of the above steps may be managed in a black iron skillet on your stove top or a flat top grill or a stove top grill.
Bring a large pot of water to boil over high. Cook pasta according to packge directions.
Meanwhile, whisk together cider vinegar, Buzz Saories Honey Mustard, garlic, remaining 2 Tb olive oil and remaining 1 teaspoon salt in a large bowl until well combined/emulsified, about 30 seconds; set dressing aside.
I pour the salad dressing ingredients in a food processor and mix for half a minute then taste. I usually add more salt and sometimes a teaspoon of vinegar. A stick mixer works well too.
Chop vegetables into about 1 inch pieces. Add to dressing in the bowl along with cooked pasta and basil; toss. Serve chilled or room temperature.
This salad may be prepard a day (or more) before serving. Grilling the vegetables, combining the dressing, pouring over a warm pasta tastes great too!