FRIENDS Moist Maker Sandwich

For gravy

1. Step 1Make gravy: In a small saucepan over medium heat, melt butter. Whisk in flour and cook until golden, 1 minute, then whisk in pan drippings. (If you have more than a 1/2 cup of drippings, use it and reduce the amount of broth!)
2. Step 2Bring mixture to a boil, then reduce heat and simmer gently until slightly thickened. Stir in fresh herbs, then whisk in broth and return mixture to a simmer. Season with salt and pepper. 
3. Step 3Simmer 10 minutes, gradually adding more broth if gravy is too thick. Season with salt and pepper. Let cool slightly. 
4. Step 4Make herb mayo: In a medium bowl, combine mayonnaise, mustard, and fresh herbs. 
5. Step 5Spread herb mayo on one side of 6 pieces of bread. Dip remaining 3 pieces of bread into gravy, making sure plenty soaks in.
6. Step 6Build sandwich by placing turkey on a mayonnaise spread piece of bread, then top with turkey,  mashed potatoes, cranberry sauce, a gravy soaked piece of bread, stuffing, arugula, and another mayonnaise spread piece of bread. Repeat with remaining ingredients to make 2 more sandwiches.