Vegetables, Foil Grilled

Ingredients

• 2 tablespoons olive oil
• 4 tablespoons balsamic vinegar
• 2 teaspoons dried basil
• 1 teaspoon dried thyme
• 1 teaspoon salt
• 1/4 teaspoon cayenne
• 1-1/2 pounds zucchini, cut into 1/2" slices
• 1-1/2 pounds summer squash, cut into 1/2" slices
• 1/2 pound shiitake mushrooms, or any type mushroom
• 1 large onion, thinly sliced
• 2 cloves garlic, finely chopped