Cream butter, milk, and sugar together in a mixer. Add eggs, 1 at a time. Turn mixer to low setting and add in flour, baking powder, and vanilla extract. Turn mixer to medium setting and mix for 5 minutes.
Pour batter into a greased cake pan or bundt cake pan. Bake for 1 1/2 hours. Test cake by inserting a toothpick into the center of the cake, if it comes out clean then it’s ready. Slice and serve!