Healthy Turkey, Zucchini & Rice Casserole

INGREDIENTS

2 tsp

olive oil

1 lb

extra lean ground turkey

1/2

onion, chopped

3/4 tsp

salt, divided

1/2 tsp

ground pepper, divided

Portobello mushrooms, stems removed & gills scraped, cut into 1-inch pieces

1 1/4 cups

chopped zucchini (3/4-inch dice)

large garlic cloves, minced

3/4 tsp

dried oregano

1/4 tsp

red pepper flakes

1 28 ounce can

crushed tomatoes

1 3/4 cups

cooked brown rice

1/2 cup

(packed) grated Parmesan cheese, divided

1/4 cup

minced flat-leaf parsley, divided