Roasted Cauliflower with fresh Tomato and Green Olives

Bahan-bahan (4 porsi)

• 1 head cauliflower, (stem trimmed, cut into 2 inch florets)
• ¼ cup olive oil, (divided)
• Kosher salt
• freshly ground black pepper
• 2 cups quartered and thinly sliced onion
• 1 teaspoon chopped garlic
• 1 teaspoon coarsely chopped fresh oregano
• ½ cup pitted and sliced green olives
• 1 cup seeded and diced tomatoes
• 1 tablespoon chopped fresh parsley