A rich and creamy spinach soup that's perfect for a cozy meal.
Melt the butter in a 3-quart saucepan over medium heat.
Ensure the butter doesn't brown; keep the heat moderate.
Add the chopped onion and sauté until softened and translucent.
Stir frequently to prevent the onion from burning.
Sprinkle in the flour and stir to combine, cooking for a minute to remove the raw taste.
Cook the flour thoroughly to avoid a raw flavor in the soup.
Gradually whisk in the milk, ensuring no lumps form.
Whisk continuously for a smooth consistency.
Season with salt, pepper, and nutmeg, stirring to combine.
Taste and adjust the seasoning as needed.
Add the spinach and cook until wilted and tender.
If using frozen spinach, ensure it's thawed and excess water is squeezed out.
Serve the soup hot, garnished with your choice of toppings.
Serve with a slice of crusty bread for a complete meal.