Steak Kebabs with Chimichurri

Chimichurri Sauce:

• ⅓ cup olive oil
• ½ cup fresh parsley (no thick stems), chopped
• ¼ cup fresh cilantro (no thick stems), chopped
• 2 tbsp red wine vinegar
• 1 tbsp fresh lemon juice
• 1 tbsp red onion, finely diced
• 2 cloves of garlic, minced
• ½ tsp dried oregano
• Pinch of crushed red pepper flakes, to taste
• Sea salt and freshly cracked pepper, to taste

Steak Kebabs:

• 1½ lbs sirloin or tenderloin steak, diced into 1-inch cubes
• 2 zucchini, cut into coins
• ½ red onion, chopped into chunks
• 1½ cups large grape or cherry tomatoes
• Olive oil, for brushing
• Sea salt and freshly cracked pepper, to taste