Preheat oven to 350ºF. Spray a large loaf pan with cooking spray and set aside.
In a medium sized bowl, mix together all the dry ingredients: flour, baking powder, nutmeg, cinnamon, and salt.
In a mixing bowl, blend together butter, yogurt and Truvia until creamy. Add in vanilla and eggnog and then the eggs.
Blend in the dry ingredients until combined and then pour into prepared pan.
Bake for 40-60 minutes, until toothpick comes out clean. Cool for 15 minutes, remove from pan and let cool completely on a wire rack.
For glaze: mix together powdered sugar, eggnog and vanilla. Drizzle over the top of the eggnog loaf. Slice and enjoy!