Creamed Spinach - Steakhouse Style Recipe

• 2 10-ounce packages of frozen chopped spinach
• 4 Tbsp butter (half stick)
• 3 Tbsp all-purpose flour
• 1 Tbsp garlic, minced
• 1/2 cup white onion, chopped fine
• 1 cup heavy cream
• 1/4 cup Parmesan cheese
• 1/2 tsp salt
• 1/4 tsp ground black pepper, more or less, to taste
• 1/8 tsp freshly grated nutmeg

Directions