Cheesy Orzo-Stuffed Tomatoes

Ingredients

• 2 tablespoons olive oil
• 3/4 cup grated parmesan cheese, divided
• cooking spray
• 1/4 cup panko breadcrumbs
• 6 large beefsteak tomatoes
• salt and pepper, to taste
• 1/2 cup red onion, finely diced
• 1/4 cup minced parsley, divided
• 1 cup cooked sausage, crumbled
• 1 cup finely diced tomato pulp
• 1 cup cooked white rice
• 6 ounces orzo pasta