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.
1 Salt and pepper roast all over. 2  Place roast in roasting pan in a pre-heated oven at 450 for 15 minute. 3  Add a little water in pan to loosen up juices. 4  Turn down oven to 325 and cook for 1 hour and 10 minute. 5  Take out and cover with aluminun foil for 30 minute. Place roast in roasting pan in a pre-heated oven at 450 for 15 minute. 2  Add a little water in pan to loosen up juices. 3  Turn down oven to 325 and cook for 1 hour and 10 minute.