Grease and flour a 12-cup bundt pan or tube pan, making sure to coat every curve so the cake releases cleanly. Let the butter and eggs come to room temperature before starting.
In a large bowl or the bowl of a stand mixer, beat the butter and sugar on medium speed until light in color and fluffy in texture. This step is key for a smooth, tender crumb.
Add the eggs one at a time, mixing well after each addition. Add the vanilla along with the eggs so it blends evenly into the batter.
Alternate adding the flour and heavy whipping cream, beginning and ending with the flour. Mix on low speed just until combined after each addition. Do not overmix once the dry ingredients are added.
Spread the thick batter evenly into the prepared pan and smooth the top.
Place the pan into a cold oven, then turn the oven to 300°F. Bake for 80 to 90 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Allow the cake to cool completely in the pan before turning it out onto a wire rack.