Ingredients
Equipment
Method
- Melt the butter in a 12-inch skillet over medium heat.
- Add the onion and cook for 4 to 5 minutes, stirring occasionally, until softened.
- Stir in the garlic and cook for 30 seconds.
- Add the flour and cook, stirring, for 1 minute.
- Gradually whisk in the milk and heavy cream until smooth.
- Bring to a gentle simmer and cook for 3 to 5 minutes, stirring often, until thickened.
- Reduce the heat to low and stir in the spinach, Parmesan, salt, pepper, and nutmeg.
- Cook for 3 to 4 minutes, stirring, until the spinach is hot and the Parmesan is melted.
Notes
For the smoothest sauce, add the milk and cream gradually while whisking. Refrigerate leftovers for up to 3 days; freezing is not recommended because the sauce may separate. For a gluten-free variation, use a 1:1 gluten-free flour blend.
