Don't let the name fool you. The flavor of this sauce is subtle--not oniony at all.
Southern Living MARCH 2006
Melt butter in a medium saucepan over medium heat; add onion, and sauté 5 to 7 minutes or until lightly browned. Whisk in flour. Cook, whisking constantly, until lightly browned (about 1 minute). Gradually whisk in broth and next 2 ingredients. Cook, whisking constantly, until thickened and bubbly. Garnish, if desired.
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