Tuscan-Style Grilled Zucchini & Summer Squash Skewers

Ingredients

• 1 sprig fresh oregano, finely diced
• 1 tablespoon sea salt
• 1/2 cup red wine vinegar
• 1 tablespoon freshly ground black pepper
• 4 sprigs of fresh rosemary, finely diced
• 1/2 tablespoon crushed red chili flakes
• 5 garlic cloves, minced
• 2 zucchinis, cut into 1 inch cubes
• 2 red onions, cut into quarters
• 8 metal skewers
• Juice from 3 lemons
• 2 cups extra-virgin olive oil
• 2 tablespoons grated lemon zest
• 3 yellow summer squashes, cut into 1 inch cubes