Cut vegetables into large pieces for easy management on the grill, or use a grill basket.
3/4 cup olive oil
1/4 cup red wine vinegar
1 tablespoon minced garlic
1 tablespoon chopped fresh basil
1 teaspoon fresh thyme leaves
1 teaspoon salt
1/2 teaspoon freshly ground pepper
1 yellow bell pepper
1 red bell pepper
1 green bell pepper
2 large onions
How to Make It
Combine first 8 ingredients in a large bowl.
Cut bell peppers into large pieces, discarding seeds and membranes. Cut zucchini in half crosswise; cut each piece in half lengthwise. Cut onions into large pieces. Slice eggplant into 1/2-inch slices. Add vegetables to marinade; toss to coat. Cover and chill 2 hours.
Remove vegetables from marinade, reserving marinade. Grill, without grill lid, over medium-high heat (350° to 400°) 10 to 12 minutes or until just tender, basting occasionally with reserved marinade. Serve warm or at room temperature.