This unsung hero of the vegetable world is in the Brassica family, meaning it's a relative of Broccoli, Cauliflower, and Cabbage. Kohlrabi's tough exterior houses a soft and amazingly sweet flesh. Give the bulbous stem a quick shave, quarter it, and then toss it in the oven at 425F with same salt, pepper and olive oil for a delicious roasted treat.