Grilled Meatloaf Sandwiches are the perfect way to make use of leftover meatloaf.  No matter which of my meatloaf recipes that I make.  I always try to ration the meatloaf so that we will have enough leftover meatloaf so I can make Meatloaf sandwiches.  We love meatloaf sandwiches, and Grilled Meatloaf Sandwiches with bread that’s been spread with Garlic Parmesan Butter is amazingly delicious.