Hamburguesas Mexicanas
Ingredients:
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3 pounds ground beef
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3 onions, minced, divided
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1 ½ cups bread crumbs
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1 pound shredded pepperjack cheese
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4 eggs
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2 tomatoes, chopped and juices strained
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2 bunches cilantro, chopped
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1 serrano chile pepper, minced, divided
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3 limes, juiced, divided
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5 avocados, peeled and pitted
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salt and ground black pepper to taste
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12 hamburger buns
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1 head iceberg lettuce, cored and shredded