Drowned Beef Sandwich with Chipotle Sauce (Torta Ahogada)
Ingredients:
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12 ounces chipotle cooking sauce (such a Knorr®)
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1 (14 ounce) can reduced-sodium beef broth
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¼ cup chopped fresh cilantro
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2 tablespoons vegetable oil
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1 onion, thinly sliced
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3 cloves garlic, minced
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1 pound thinly sliced deli roast beef
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4 bolillo rolls, halved and lightly toasted
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4 sprigs fresh cilantro, or to taste