Easter Pork - Las Palmas Sauces

Ingredients

• 6 lb boneless pork shoulder, not lean, cut into 3-inch chunks
• 2 tsp salt
• 1 tsp black pepper
• 1/2 cup Original Style Enchilada Sauce
• 1 large white onion, halved lengthwise, then cut crosswise into ½-inch slices
• 3 fresh or frozen banana leaves (thawed, if frozen)