3 grilled potato fennel dressing Recipes

red potatoes , scrubbed clean, patted dry with paper towel (or white potatoes), olive oil, salt, fresh ground black pepper, fennel bulb, stem removed , fronds reserved, wiped clean, bottom left intact, cut lengthwise into 1/4-inch slices, sweet onion, peeled, ends trimmed , cut lengthwise into 1/4-inch slices, buttermilk, sour cream, apple cider vinegar, hot red pepper sauce (or to taste), chopped scallions (green onions), chopped fresh parsley leaves, chopped fresh dill (1/4-1/2 tsp. dried ), minced fresh garlic, chopped fresh oregano leaves (1/4 tsp. dried ), reserved fennel leaves

red wine vinegar, dijon mustard, extra-virgin olive oil, divided, plus more for brushing, crumbled blue cheese (such as maytag; about 2 oz), zucchini , halved lengthwise, bell peppers (preferably in assorted colors), seeded , quartered lengthwise, red-skinned potatoes , scrubbed, cut into 1/3-inch-thick slices, fennel bulb, trimmed , cut through core into 8 wedges, fresh shiitake mushrooms, stemmed, baby beets (about 11/2 inches in diameter), trimmed, scrubbed, halved crosswise, red onion , cut into 1/3-inch-thick slices