Preheat your oven to 375°F (190°C).

In a large mixing bowl, whisk together the eggs, Au Jus packet, freshly cracked pepper, dry mustard, and onion powder.

Gently fold in the ground beef and panko crumbs into the egg mixture.

Divide the meat mixture in half and shape each portion into a foot on a parchment-lined baking sheet.

Place slices of medium yellow onion at the end of each 'toe' for toenails.

Generously top each onion toenail with ketchup.

Bake for about 40-50 minutes until the center reaches an internal temperature of 165°F.

Let the loaf cool for about 5 minutes before serving.