Mix ground beef with cardamom, basil, salt, and pepper.

Heat a large skillet over medium-high heat. Cook and stir beef in hot skillet until completely browned, 5 to 7 minutes.

Mix corn and peas in a bowl. Pour enough boiling water over the corn and peas to cover completely; soak until heated through, 5 to 10 minutes.

Bring a small saucepan of water to a boil. Cook parsnip in boiling water until fork-tender, 5 to 7 minutes; drain and transfer parsnip to a bowl. Pour butter over parsnip and mash with a fork.

Divide beef, peas and corn mixture, and mashed parsnips between two plates.