On a cutting board with a sharp knife, split the 6 nori sheets in half.
With a spoon, divide the rice into 12 portions.
Wet hands with water, and mold rice in hands to approximate shape and as the SPAM.
Place formed rice on middle of nori sheet.
Drizzle spoonful (~1-2 tablespoons) of sauce, from cooked SPAM, onto rice. If desired, sprinkle sesame seeds on top of rice.
Place 1/12 portion/slice of SPAM onto rice.
Add an egg slice on top of SPAM.
Wet edges of nori with a finger and fold the ends inward.
Wrap completed SPAM Musubi Roll in plastic wrap.
Repeat assembly steps above to complete remaining 12 rolls.
For the best flavor, let SPAM Musubi Rolls sit for at least 15-30 minutes to allow flavors to meld and for nori to soften.