INGREDIENTS
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Yield: 4-5 servings
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2 lbs very thinly sliced beef sirloin *
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1/2 teaspoon kosher salt
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1/2 teaspoon freshly ground black pepper
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1/4 teaspoon onion powder
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5 tablespoons all purpose flour, I used brown rice flour for a gluten free version
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4 tablespoons olive oil, divided
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2 yellow onions, halved and thinly sliced, about 2 cups worth
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3 cups crimini or white button mushrooms, about 12 ounces worth, sliced or quartered if small
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1/2 teaspoon dried thyme
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2 cloves garlic, minced
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4 cups beef stock, hot
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1/4 lb provolone cheese, thinly sliced
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Sourdough bread bowls, centers hollowed out, for serving
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* I bought a top round roast, sliced it into very thin steaks and then sliced that into thin strips.