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1
Spread roll bottoms with mayonnaise.
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2
Layer with turkey, ham, bacon, diced pimientos, and cheeses. Replace tops.
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3
Arrange sandwiches in a single layer on a foil lined 1/4 sheet pan.
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4
In a small skillet, melt butter over medium heat. Add onion; cook and stir 1-2 minutes or until tender.
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5
Whisk in the brown sugar, Worcestershire sauce, and garlic powder. Continue whisking until brown sugar is dissolved.
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6
Pour butter sauce over sandwiches.
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7
Cover with aluminum foil and refrigerate for several hours.
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8
Preheat oven to 350 degrees F. Bake, covered, 25 minutes.
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9
Remove foil and bake uncovered for an additional 5 minutes or until golden brown.