cream of broccoli soup recipe

Ingredients 2 tablespoons butter 1 onion, chopped 2 cloves garlic, minced 1 large head of broccoli, chopped into florets 4 cups chicken broth (or vegetable broth) 1 cup heavy cream (or half-and-half) Salt and pepper to taste Optional: 1/4 teaspoon ground nutmeg for extra flavor Freshly grated Parmesan cheese for garnish