Place the nuts in a small dry skillet over medium heat. Cook the nuts, stirring frequently, until they are golden and fragrant, around 5 minutes.
Core and thinly slice the pears.
Toast the bread slices.
Spread about 1 tablespoon of cream cheese on each bread slice. Sprinkle the nuts evenly over half of the bread slices. (To amp the salty or sweet flavors, add a pinch of salt to the sour cream, or a drizzle of honey.)
Finish each sandwich with pear slices, alfalfa sprouts, and the remaining bread slice. Slice in half and serve.