Here are the proper grilling times for vegetables, including peppers, eggplant, asparagus and many more. Note, these are general vegetable grilling times.

To find the proper grilling time on the chart below, locate the vegetable you are grilling in the first column and follow the row to your right for grilling time. You will find the grilling times for the following vegetables: Scallions, Tomatoes, Summer Squash, Zucchini, Eggplant, Asparagus, White Mushrooms, Bell Peppers, Onions, Potatoes.

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Grilling Instructions: The trick with vegetables is getting them to cook through at the same time – not always an easy task since we frequently like to eat a variety of different veggies together but their grilling times vary widely. Following these guidelines should help. After a time or two you’ll be able to judge how to apply them to your particular grill and preferred degree of doneness.

Make sure you marinade the veggies or brush them first with oil to prevent sticking. You may thread them on skewers, use a grilling basket or place them directly on the grill. Cook them ove medium heat in a closed grill and turn once, halfway through the cooking time.
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Type Thickness Time
Scallions ends trimmed 5 minutes
Tomatoes ½” slices 5 minutes
Summer Squash ¼” slices 10 minutes
Zucchini ¼” slices 10 minutes
Eggplant ¼” slices 10 minutes
Asparagus thick end trimmed 10-15 minutes
White Mushrooms whole 10 minutes
Bell Peppers 1″ wide strips or rings 10 minutes
Onions ½” slices 15 minutes
Potatoes ¼” slices 15 minutes