Spread the softened butter evenly and thickly over the entire surface of a 12 cup Bundt pan, this works great with the original design or one that doesn’t have many intricate ridges. It may be messy, but you can use your hands to make sure the surface is completely covered thickly with butter.
Combine flour, almond flour, and baking soda in a small bowl and set aside.
In a mixer, cream butter and sugar for several minutes until the sugar has dissolved into the butter a bit, and the mixture has become very light. The sugar will not dissolve completely.
Dust with powdered sugar if you want to be fancy, but this cake is delicious, just plain.