Here are some more tips from the American Institute for Cancer Research to help you become a veggie grill master:  

Asparagus â€“ Plunge spears into boiling water for 1 minute. Blot dry with paper towels. Line up 3-4 spears like soldiers and insert a toothpick through them 1-inch below the tips. Insert another toothpick 1-inch above the bottom. Brush lightly with olive oil. Grill for 2 minutes, turn and grill 2 minutes.

Broccoli â€“ Select spears with fat stems. Cut off the stems 2 inches below the crown, then stand spears on end and cut them vertically into 3/4-inch slices. Blanch for 1 minute. Blot dry with paper towels. Brush slices lightly with olive oil. Grill for 1 1/2 - 2 minutes on each side.

Carrots â€“ Cut off the top and bottom of a fat, medium-large carrot. Cut lengthwise into 1/4-inch slices. Brush lightly with olive oil. Grill slices for 3 minutes, turn and grill for 2 more minutes.

Onions (red, yellow or sweet) – Cut crosswise into 1/2-inch slices. Insert 2 toothpicks crosswise into slices to hold them together on the grill. Brush lightly with olive oil. Grill for 2 minutes on each side. 

Portobello Mushrooms â€“ Select mushrooms about 3-inches across. Discard the stems and use a small knife to pare away ragged edges. Brush lightly with olive oil. Grill the mushrooms gill side up for 2 minutes, turn and grill for 2 minutes, or until no longer raw-looking inside at the thickest point.

Sweet Peppers â€“ Choose peppers that are as square or triangular as possible, with sides that are flat. Standing a pepper on its bottom, hold a large knife and vertically cut off each side as a slab. Brush pepper pieces lightly with olive oil. Grill for 3 minutes, turn, and grill for 2 minutes. 

Zucchini Squash â€“ Cut off the top and bottom off a fat, medium-large squash. Cut the squash lengthwise into 1/2-inch slices. Brush lightly with olive oil. Grill for 2 minutes on each side.

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