Slice spam into 4-5 equal pieces. Punch out shapes (optional)

In a pan on low heat, place in spam slices, and carefully add small spoonfuls of the egg into the cut outs.

Cover with a lid to set the egg in the holes.

Pan sear spam on both sides, brush non-presentation side with the spam sauce. Flip over to caramelize.

To a cleaned spam tin, line with plastic wrap and add 1/2 cup cooked rice. Press down. Brush a more sauce on top of rice. Place spam on top of rice and press down again. Wrap in plastic wrap to set.

Divide nori sheets into 4 equal pieces, upwrap musubi, and wrap the bottom with nori sheet to keep the top exposed.