Chimichurri Sauce

Ingredients

• 1 cup chopped parsley lightly packed, ideally, flat leaf "Italian" parsley
• 5 cloves garlic minced
• 1 teaspoon salt
• 1/2 teaspoon freshly ground pepper
• 1/2 teaspoon chili pepper flakes
• 2 tablespoons fresh oregano leaves optional
• 2 tablespoons shallot or onion, minced
• 3/4 cup vegetable oil
• 3 tablespoons sherry wine vinegar or red wine vinegar
• 3 tablespoons lemon juice
• 4 sirloin steaks 1-inch thick
• 4 tablespoons chimichurri sauce prepared
• kosher salt
• ground black pepper