RECIPE: Bacon Cheeseburger Flatbread Mix 1/4 cup each French’s Tomato Ketchup and mayonnaise and 2 tbsp. French’s Classic Yellow Mustard in small bowl. Divide mixture in half and set aside. Stir in 1/2 cup dill pickle relish, 1 cup shredded Cheddar cheese and half of the Ketchup mixture.