Preheat oven to 350 degrees. Heavily spray bundt pan with cooking oil or butter then sprinkle with flour.
Set aside.
In a medium bowl, mix eggnog, bourbon and vanilla.
In a large bowl with electric mixer, cream together the butter and sugar until light and fluffy, about 2 minutes.
Add the eggs one at a time, mixing each time just until incorporated.
Add the baking powder, salt, cinnamon, and nutmeg to the butter mixture and beat until combined.
Starting and ending with the flour, add ⅓ flour into wet mixture, alternating with eggnog mixture.
Pour into prepared bundt pan and bake until done a tester inserted in the center comes out clean, about 50-55 minutes.
Cool in the pan for 10 minutes then invert and remove from pan.