Add the flour and 4 tablespoons of the cold butter to a pot over medium heat; stir and combine. Slowly whisk in the cream and bring to a simmer. Add the chopped meat, pepper and coriander and continue to whisk and simmer until it thickens. Turn off the heat.
Meanwhile, combine the oil and the remaining 4 tablespoons cold butter in a large pan over medium heat; add the potatoes. Fry, flipping occasionally, until golden brown in color. Drain the excess oil and set aside.
Heat a griddle over medium-high heat. Butter each side of the bread slices with the softened butter and place on the griddle until golden brown. Flip and layer on the Muenster cheese, meat gravy and potatoes. Sandwich together and fry until golden brown and the cheese is melted. Cut in half and serve immediately.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.
Recipe courtesy of Jake McPeck and Don McPeck, Mess Hall Canteen, Los Angeles