INGREDIENTS
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1/2 cup mayonnaise
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1/4 cup plus 2 tablespoons pineapple preserves
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1/8 teaspoon plus 1/2 teaspoon salt
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1 1/4 pounds ground beef
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1/4 teaspoon onion powder
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1/4 teaspoon black pepper
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6 slices pepper Jack cheese, each cut into 4 quarters
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1 (12-count) package Hawaiian bread rolls