In a small bowl, combine the dressing ingredients and whisk until well blended.

Fill a large pot with water, add salt, and bring to a boil. Cook the pasta until al dente, then drain and toss with half the dressing.

In a skillet, cook the ground beef with the spices until browned, draining excess fat.

In a mixing bowl, combine the cooked pasta, beef, corn, black beans, cherry tomatoes, and optional vegetables. Toss with remaining dressing.

Transfer to a serving dish, top with cheese and scallions, serve warm or chill.