Leftover Mashed Potato Waffle Sandwich Author: Chef Shamy Prep time: 5 mins Cook time: 10 mins Total time: 15 mins Ingredients 2 Tablespoons Chef Shamy Parmesan Basil Garlic Butter or French Onion Butter 1/4 Cup Buttermilk 2 Eggs 2 1/2 Cups Leftover Mashed Potatoes 3 Tablespoons chopped scallions 1 Cup shredded cheddar cheese 1/2 Cup