1 pkg (12 oz) King's Hawaiian sweet rolls, split
1/4 cup mayonnaise
12 slices deli turkey
12 slices cooked bacon
6 slices Gruyere cheese
1/4 cup grated Parmesan cheese
1/4 c dices pimentos
1/2 cup button, cubed
2 Tablespoons finely chopped onion
2 Tablespoons brown sugar
1 1/2 teaspoons Worcestershire sauce
1/4 teaspoon garlic powder
Spread roll bottoms with mayonnaise
Layer with turkey, bacon, a few diced pimientos, and cheese. Replace tops.
Arrange sandwiches in a single layer in a greased 9 inch square pan.
In a small skillet, melt butter over medium heat. Add onion, cook and stir 1-2 minutes or until tender.
Whisk in the brown sugar, Worcestershire sauce, and garlic powder. Continue whisking until brown sugar ins dissolved.
Pour butter sauce over sandwiches.
Cover with aluminum foil and refrigerate for several hours.
Preheat oven to 350º, Bake, covered 25 minutes.
Remove foil and bake uncovered for an additional 5 minutes or until golden brown.