Marinated Flank Steak Sandwiches - The Village Grocer

Marinated Flank Steak Sandwiches - The Village Grocer

www.thevillagegrocer.com

Marinated Flank Steak Sandwiches with caramelized onions and mushrooms. Perfect for a hearty meal from The Village Grocer.

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Ingredients

  • 1.5 pounds marinated flank steak
  • 1 tablespoon butter
  • 2 tablespoons olive oil
  • 1 large yellow onion, thinly sliced
  • 8 ounces sliced mushrooms
  • salt and pepper to taste
  • sliced Gruyere cheese
  • French baguette
  • 1/4 cup mayonnaise
  • 1/4 cup sour cream

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