How to Make It
Preheat the oven to 350°. On a baking sheet, brush the parsnips with olive oil and season with salt and pepper. Roast the parsnips, turning once or twice, until tender, about 40 minutes. Let cool slightly, then quarter the parsnips lengthwise and slice them 1/4 inch thick.
Meanwhile, in a large, deep skillet, cook the bacon over moderately high heat until well browned and crisp, about 6 minutes. Drain the bacon strips on paper towels; wipe out the skillet.
In the skillet, bring the Viognier to a boil with the butter and shallot. Add the clams, cover and cook over high heat until they open, 6 to 8 minutes. Using a slotted spoon, transfer the clams to a large bowl.
Pour the clam broth into a glass measuring cup. Rinse out the skillet. Slowly pour the clam broth back into the skillet, stopping before you reach the grit at the bottom. Add the cream and boil until the liquid has reduced by half, about 8 minutes. If the cream sauce separates, transfer to a blender and puree until smooth, then return it to the skillet.
Add the roasted parsnips, bacon, chives and the cooked clams in their shells to the skillet. Season generously with pepper, cover and bring to a boil. Spoon into shallow bowls, sprinkle with oyster crackers and serve immediately.