Directions:
Step 1
Prepare oven and pan:
Preheat oven to 250°F. Line a sheet pan with foil.
Step 2
Cut bologna:
Stack the bologna slices and cut 4 (1/2- to 3/4-inch) notches around the edge at regular intervals (see note above).
Step 3
Make mayonnaise spread:
Stir together mayonnaise and mustard in a small bowl; refrigerate until ready to use.
Step 4
Toast bread:
Spread butter evenly over one side of each bread slice. Heat a large skillet or griddle over medium heat. Arrange bread in pan, buttered side down. Cook until toasted on the bottom, 2 to 3 minutes. Flip bread over and toast on unbuttered side until lightly browned, 1 to 2 minutes. Remove bread to a wire rack (so it doesn’t get soggy).
Step 5
Fry bologna:
Increase heat to medium-high. Arrange 4 bologna slices in pan; cook until lightly charred around the edges, about 2 minutes on each side, pressing down the center of each slice occasionally if it puffs up.
Arrange the bologna slices in a single layer on the prepared pan and place it in the oven. As you work through each batch of bologna, stack the slices on the pan and keep warm in the oven. When all bologna is cooked, top each stack with 1 cheese slice; place pan in oven until cheese melts, 2 to 3 minutes.
Step 6
Build sandwiches:
Spread mayonnaise mixture over the unbuttered sides of toast. Place 4 toast slices, mayo mixture side up, on a work surface. Top each with ½ cup lettuce, 1 tomato slice, 4 pickle slices, and 1 bologna stack. Top each sandwich with ½ cup chips and top bread slice.
