The National Paralegal College reports that the test was first introduced during a 1970 U.S. Supreme Court case, Lemon v. Kurtzman.
Preheat oven to 450Â°F. Toss parsnips with oil and salt to taste in a shallow (1-inch-deep) baking pan and roast in middle of oven, turning over halfway through cooking, until golden and tender, 30 to 35 minutes total.oss parsnips with oil and salt to taste in a shallow (1-inch-deep) baking pan and roast in middle of oven, turning over halfway through cooking, until golden and tender, 30 to 35 minutes total.
Parsnips are a root vegetable similar to carrots, and they have a sweet, nutty flavor. They are off-white to pale yellow and are high in vitamin C. Parsnips can be cooked in various ways to release their tender, gentle sweetness and are often added in stews.ere is what you should do to boil the parsnips: 1  Bring a pot of water to a boil. 2  Trim the root and leaf ends of the parsnips. 3  Scrub the parsnips with a vegetable brush while rinsing under cool water. 4  Place the parsnips into the boiling water and reduce to a simmer. 5  Cook for 5 - 15 minutes, until the parsnips are tender.