Preheat oven to 350°. Line 2 baking sheets with parchment paper.

In a small bowl, combine mayonnaise, apricot preserves, and Dijon, whisking to combine.

Using a serrated knife, and without separating dinner rolls, cut in half lengthwise. Spread mayonnaise mixture onto cut sides of bread. Evenly layer turkey, apple, and cheese over bottom halves of prepared bread. Cover with tops of prepared bread.

Place sandwiches on prepared pans. Brush tops of rolls with melted butter. Sprinkle tops of rolls with sesame seeds and dried minced onion. Bake for 10 minutes or until cheese is melted. Using a serrated knife, cut into individual sandwiches.