Heat oven to 350 degrees F.
Spray a 9"x4" loaf pan with baking spray. Set aside.
Peel, core, and dice pear. Set aside.
In a small, heavy pot, combine sugar, ginger, and nutmeg.
Cook over medium low heat, stirring only after sugar starts to melt, until sugar is dissolved.
Stir in pears.
Return to heat.
Continue to cook and stir over medium low heat until sugar melts again completely.
Remove from heat and set aside to cool.
In smallest bowl of food processor, combine all ingredients.
Pulse until well-combined and walnuts are chopped. Set aside.
In a medium bowl, whisk together flour, salt, baking powder, baking soda, cinnamon, nutmeg, and ginger. Set aside.
In a large bowl, beat sugar, brown sugar, egg, and oil.
Add dry ingredients.
Mix until just incorporated.
Add buttermilk and vanilla.
Mix in pears and walnuts.
Pour into prepared pan.
Top with streusel.
Bake for 50 minutes, or until done, covering the last 20 minutes or so.
