Baked Ham and Chile Sandwiches
Ingredients:
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1 (7 ounce) can whole fire-roasted mild green chiles (such as La Victoria®), or more to taste, diced
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½ cup dried minced onion
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⅓ cup prepared yellow mustard
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⅓ cup butter, softened
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2 tablespoons poppy seeds
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8 hamburger buns, split
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16 slices deli ham
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8 slices Swiss cheese