1/4 cup olive oil
3 tablespoons fresh lemon juice
1 1/2 teaspoons salt
1 teaspoon freshly-ground black pepper
1 1/2 teaspoons dried oregano
2 cloves garlic, mashed
3 TBS Parmesan cheese (Optional)
4 medium-size red onions, quartered
2 medium-size green zucchini, cut into 1-inch pieces
2 medium-size yellow summer squash, cut into 1-inch pieces
12 mushrooms, stemmed
1 red bell pepper, seeded and cut into 1-inch pieces
1. Mix marinade ingredients in a small bowl, stirring to blend.
2. Place prepared vegetables in a 2-gallon zipper-top plastic bag. Pour in the marinade, seal the bag, and turn over to coat everything. Marinate in the refrigerator 1 to 3 hours.
***Meanwhile Soak the Skewers, this prevents them from catching fire***
3. When ready to cook, remove vegetables from marinade and thread onto skewers. Leave a little space between the vegetables for air to circulate. Grill using directly on grill until all vegetables are golden and tender, 20 to 25 minutes.
4. Remove from skewers and serve warm.