Parmesan-Broccoli Timbales

1 Tbsp butter
1 small onion, minced
2 C frozen chopped broccoli, thawed
1 C half-and-half
1/2 tsp salt
1/8 tsp ground nutmeg
1/8 tsp pepper
1/4 C grated Parmesan cheese
3 eggs

Preheat oven to 325. Grease 4 small baking cups. Heat butter in large skillet over medium-high heat. Add onion; cook until tender, about 5 minutes. Drain broccoli and pat dry. Place in medium bowl. Heat half-and-half almost to boiling. Add half-and-half, onion, salt, nutmeg, pepper and Parmesan to broccoli; mix well. Add eggs to broccoli mixture; mix with a fork until smooth. Pour into prepared baking cups. Place cups in a baking dish. Pour enough water into dish to cover cups halfway. Bake until custard is barely set, about 35 minutes. Let cool; run a knife around each cup to loosen timable. Invert to serve.