Ingredients:Portobello mushrooms, stem removed
Asparagus, trimmed of woody ends
Zucchini, sliced lengthwise
Scallions, trimmed of wilted parts
Red onions, cut into quarters, root attached
Sweet potatoes, cut lengthwise
Instructions:Drizzle with olive oil, salt, and pepper; toss well to coat.
Heat grill to medium high. Place vegetables directly on grates and cook 4 to 5 minutes per side (depending on the vegetable -- potatoes will take longer).