Preheat oven at 325 F. Liberally spray a 12-cup bundt pan with non-stick baking spray or use my homemade cake release to make sure your cake doesn't stick
In your stand mixer bowl, add butter and sugar and mix for 3-4 minutes on high speed until very pale yellow and fluffy.
Next add eggs, one at a time, combining well after each addition and scraping down the sides of your bowl as needed.
Turn your mixer down to its lowest speed, and slowly add flour into batter in two increments then add salt and baking soda. Be careful not to overbeat.
Lastly add in sour cream and vanilla extract, scrape down sides and mix until just combined and turn off the mixer.
Pour 2/3rds of batter into the prepared bundt pan.
In a small bowl, whisk together pecans, brown sugar, cinnamon and nutmeg until combined. Evenly pour the filling over the batter then add the remaining cake batter over the top. You may want to smooth out the top with a spatula.
Bake for 1 hour and 15-20 minutes or until a toothpick inserted in the center of the cake comes out clean.
Cool in the pan on a wire rack for 10 minutes then invert the cake on a serving plate for at least an hour or until the cake is cool to touch.
In a small bowl, whisk together confectioners sugar and milk. Drizzle over cake and serve.