3 oven roasted fall Recipes

yellow onions, peeled and cut into quarters (leave root end intact), russet potatoes , scrubbed and cut lengthwise into 1/2-in.-thick slices, turnips (1 1/2 lbs.), peeled and cut into eighths, carrots, peeled and cut into 3-in. lengths (cut thickest pieces in half lengthwise), parsnips, peeled and cut into 3-in. lengths (cut thickest pieces into halves or quarters lengthwise), butternut squashes, peeled, halved, seeded , and cut into 3- by 1-in. pieces, garlic cloves, loose papery outer skins removed, inner skins left on, orange sweet potatoes, peeled and cut into 3- by 1-in. pieces, extra-virgin olive oil, coarse salt , plus more to taste, freshly ground black pepper , plus more to taste, rosemary (3 in . each)

white wine vinegar, chopped fresh tarragon, dijon mustard, sugar, olive oil, sour cream, green onions, fresh corn kernels, halved cherry tomatoes