Slice Swiss Oval in half horizontally through the middle, creating two equal halves.
Spread Crostini Butter evenly over each half, ensuring coast-to-coast coverage over both. Place onto a sizzle platter, butter side up, and toast until bread is golden brown, about 2-3 minutes.
Arrange Eye Round on a sizzle platter in the same size & shape of a Swiss Oval.
Add 1st portion of Au Jus. Season with S&P.
Shingle cheese evenly over the meat.
Place into a 500°F oven. Heat until the meat is warm and the cheese is melted, about 2-3 minutes.
Place meat & cheese onto the bottom half of the bread. Close the sandwich.
Cut sandwich in half on a slight bias. Place along the front edge of the plate, with cut sides facing out, as shown in the photo.
Serve with a cup of hot Au Jus to the back right of the sandwich, as shown in the photo.
Serve with specific Sandwich Accompaniment noted below.
—