"In '200 Best Panini Recipes'..."
INGREDIENTS
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2 teaspoons olive oil
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4 ounces shiitake mushrooms, stems removed, caps thinly sliced
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1 tablespoon soy sauce
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1 teaspoon Worcestershire sauce
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4 slices sourdough bread (1/2 inch thick)
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1 tablespoon olive oil
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2 ounces roast beef, thinly sliced
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2 ounces provolone cheese, thinly sliced
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1/2 cup baby spinach leaves