Ingredients

• 1 1/2 cups Béchamel sauce
• 1/2 cup grated Gruyère cheese
• 1/4 cup grated Parmesan cheese
• 1 cup cooked puréed onion

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Instructions

1. To Béchamel sauce add Gruyère cheese, Parmesan cheese, and onion. Add salt and pepper to taste. Heat until flavors are thoroughly blended and the sauce is smooth.