Prepare the Spinach: Wash the spinach leaves thoroughly and remove any tough stems.
Cook the Spinach: In a large pot of boiling water, blanch the spinach for 1-2 minutes until wilted. Drain and squeeze out excess water.
Make the Cream Sauce: In a separate saucepan, melt the butter over medium heat. Add the minced garlic and cook until fragrant.
Add Flour: Stir in the flour and cook for 1-2 minutes to make a roux.
Add Cream: Gradually pour in the heavy cream while whisking continuously to prevent lumps from forming.
Combine Ingredients: Add the cooked spinach to the cream sauce and stir to combine. Season with nutmeg, salt, and pepper to taste.
Simmer: Let the mixture simmer for 5-7 minutes until thickened, stirring occasionally.