Preparation

1. Preheat oven to 375 degrees F and grease an 8x8 baking dish.
2. Bring a large pot of water to a boil. Once boiling, add frozen onions and simmer for 5-8 minutes or until tender. Drain.
3. In another large saucepan, melt butter over medium heat. Stir in flour and cook for 1 minute.
4. While continuously stirring, slowly add in the heavy cream and broth to saucepan. Simmer another 1-2 minutes over low heat and add nutmeg.
5. Remove from heat and stir in ¼ cup of the parmesan cheese and season with salt and pepper.
6. Add onions to sauce and stir until fully combined.
7. Transfer mixture to the prepared baking dish and top with remaining cheese.
8. Bake for 30-35 minutes or until top begins to brown.
9. Serve warm.