Preheat the oven and prep the pan: Preheat your oven to 350°F (176°C). Then grease a 12-cup bundt pan with cooking spray or flour and dust it with flour.
Beat the eggs and sugar: Add the room temperature eggs, sugar, and vanilla extract to the bowl of your stand mixer and beat on medium speed for 5 to 8 minutes or until the mixture is light and fluffy.
Combine the dry ingredients: In a separate small bowl, whisk together the flour, baking powder, and salt.
Add the flour mixture, butter, and milk: To the bowl of your stand mixer, add the flour mixture, melted butter, and room temperature milk to the egg mixture one half at a time on low speed making sure to mix after each addition. In simple terms, add half of the flour, then half the melted butter, then half the milk, then the other half of the flour, the remaining melted butter, and finally the rest of the milk. Note, your batter does need to be combined well, but not over-mixed, which will result in a tough cake.
Bake the vanilla bundt cake: Pour the batter into the prepared bundt pan. Then place it into the preheated oven to bake for 30 to 35 minutes until the top of the cake is golden brown. The bundt cake is done baking when a toothpick inserted into the center comes out clean and the sides of the cake have started to pull away from the edges of the pan.
Cool the cake: Allow the cake to rest in the cake pan for at least 10 minutes before turning it out onto a wire rack to finish cooling.
Decorate and serve: Transfer the fully cooled cake to your favorite cake platter and dust with powdered sugar or drizzle with vanilla icing.