Green Onion-Parmesan Mornay Sauce

• butter↗1⁄2 cup
• green onion, chopped↗1⁄2 cup
• fresh parsley, chopped↗1⁄4 cup
• all-purpose flour↗2 tablespoons
• heavy cream↗2 cups
• swiss cheese, shredded↗4 ounces
• parmesan cheese, freshly grated↗4 ounces
• salt, to taste↗
• pepper, to taste↗

Step-by-step instructions

1. 1

   Melt butter in a heavy saucepan over medium heat.

2. 2

   Stir in green onion and parsley; cook until the green onion has softened, about 3 minutes.

3. 3

   Stir in flour and cook for 3 minutes more, stirring constantly.

4. 4

   Pour in the cream, increase heat to medium-high and bring to a simmer. Once the cream comes to a simmer, reduce heat to medium-low and whisk in the shredded Swiss and Parmesan cheeses.

5. 5

   Slowly simmer, uncovered, until the sauce has thickened, about 3 minutes. Season to taste with salt and pepper before serving.