In a large mixing bowl, beat your butter and cream cheese until smooth.
Add in your sugar and beat at medium speed until light and fluffy.
Add in your eggs one after the other and add in some flour and mix.
Add in your other eggs and beat in the vanilla extract before mixing at low speed until well combined.
Add some of the milk and mix until well combined. Repeat, alternating with the rest of the flour mixture and milk.
Grease a 12-cup Bundt pan, and pour in your mixture and bake for 45 minutes or until golden brown and a toothpick inserted into the centre comes out clean.
Make your glaze by whisking the powdered sugar, milk, and vanilla in a bowl until smooth.
Pour the glaze over the vanilla Bundt cake over top of a wire rack.