Mediterranean Cauliflower Casserole - Paula Deen

Ingredients

• 1 head cauliflower (2 pounds), cut into florets
• 2 tablespoons Olive oil
• 1 onion, chopped
• 1 clove garlic, chopped
• 1 (14½-ounce) can no-salt-added diced tomatoes
• ½ cup chopped kalamata olives
• salt, to taste
• Freshly ground black pepper , to taste
• 4 ounces crumbled feta cheese