Chimichurri:
- In a small bowl, stir together cilantro, parsley, green onion, oil, lemon juice, vinegar, salt, pepper and chili flakes.
Sandwiches:
- In a medium bowl, toss Halloumi, red pepper and zucchini with the remaining chimichurri. Let marinate for 10 minutes, stirring occasionally.
- Meanwhile, preheat grill to medium-high heat; grease grates well.
Grill Halloumi slices, turning once, for 4-8 minutes or until well-marked.
- Grill red pepper and zucchini, turning once, for 4-6 minutes or until well-marked and tender. Set aside the remaining chimichurri.
- Grill sourdough slices, turning once, for 1-2 minutes or until grill-marked and toasted. Brush with reserved chimichurri.
- Assemble garlic aioli, arugula, grilled Halloumi and grilled veggies between grilled bread slices. Cut sandwiches in half to serve.
Tip: Substitute zucchini and red pepper with other vegetables as desired, depending on what’s in season. Grilled asparagus, eggplant and tomatoes are also nice in this sandwich.