Preheat oven to 325 degrees F. Spray a 10-cup Bundt cake pan with non-stick baking spray.
In a large bowl, using a hand electric mixer or in the bowl of a stand mixer fitted with paddle attachment, cream together the butter and cream cheese for 5 minutes on medium speed.
1 ½ cups (3 sticks) unsalted butter, 8 ounces cream cheese
Slowly add the sugar and continue to mix for another 5 minutes. Mix in the vanilla extract. (The batter will look like a really airy and fluffy pancake batter)
2 ½ cups granulated sugar, 1 tablespoon vanilla extract
Combine the flour and eggs with the mixture, alternating adding each and mixing between each addition; stopping when just combined. Don’t overmix on this last step.
3 cups cake flour, 6 large eggs
Pour the batter into the prepared pan. Bake for 1 hour and 30 minutes, or until a toothpick or cake tester inserted into the middle comes out clean.
Remove the pan from the oven and place on a wire rack. Allow the cake to cool in the pan for about 10 to 15 minutes.
Then gently run a thin knife or offset rubber spatula around the edges of the cake to loosen it from the sides of the pan. Place a cooling rack on top of the cake pan. Hold the sides of the pan and the rack together, and carefully invert the pan to release the cake onto the rack. Gently tap the pan if needed to encourage the cake to release. Let the pound cake cool completely to room temperature. This can take anywhere from 1 to 2 hours. Serve with a dusting of powdered sugar, a side of whipped topping or vanilla ice cream and berries.