03 Step
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10 mins
Heat 2 tablespoons butter and 1 tablespoon oil in a large skillet over medium-high heat. Add mushrooms and onion and cook until mushrooms are softened and onions are translucent, about 4 minutes. Add remaining butter; stir constantly until melted. Sprinkle flour over vegetable mixture and cook, stirring constantly, for 1 minute. Stir in milk and stock and bring to a simmer, stirring often. Simmer for 5 minutes. Stir in lemon juice, Dijon mustard, 1 teaspoon salt, and pepper.
Merlin Cronin
Jul 12, 2024The panko bread crumb topping was the perfect touch. So much better than the traditional crushed crackers.
Aryanna Metzkub
Apr 7, 2024This recipe is a game-changer! My family devoured it, and it's so easy to make.
Cathy Marvin
Dec 22, 2023I loved the addition of lemon juice and Dijon mustard to the sauce – it really brightened up the flavors.