Adjust an oven rack to the middle position and preheat to 350°F
In a small bowl, whisk together all of the ingredients for the butter sauce. Set aside.
Using a serrated bread knife, slice the rolls in half horizontally, keeping the top and bottom halves separately intact. Spread the Dijon mustard evenly over the cut sides of the roll tops and bottoms.
Place the bottom half of the bread, cut side up, in a 9-inch square baking pan. Place half of the cheese in an even layer over the bread. Top with all of the ham, followed by the remaining cheese. Cover with the roll tops.
Evenly spoon the butter sauce over the top of the rolls, letting it drip down the sides.
Bake for 22-25 minutes, until the top is golden brown and toasted. Let cool for 15-20 minutes in the pan. Using a large spatula, carefully transfer the sandwich block to a cutting board. Slice into sandwiches and transfer to a paper towel-lined serving plate. Serve warm or room temperature.
Preheat oven to 350 degrees F. Coat a 9x13-inch baking dish with cooking spray
Unroll the pizza dough onto a cutting board, and press into approximately a 13x18-inch rectangle. Top with ham and cheese slices. Starting on the longer side of the rectangle, roll up the edge tightly. When you reach the end, pinch the seam together, and flip the roll so that the seam is face down. Cut into 12 slices, approximately 1-inch wide. Arrange in prepared baking dish.
Next combine the butter, brown sugar, Worcestershire sauce, mustard and poppy seeds in a saucepan over medium heat. Whisk until the butter is melted and the glaze is smooth and combined. Pour evenly over the rolls.
Cover and refrigerate for up to 24 hours or bake, uncovered, for 25 minutes until golden brown. Enjoy!