Using your stand mixer fitted with the paddle attachment, beat the butter and sugar together for about 2 to 3 minutes. Add in the eggs, one at a time, mixing well after each addition. In a separate, large mixing bowl, combine the flour, baking powder, almond flour and salt. Add these dry ingredients into the wet egg mixture and mix together on a low setting. Once everything has been incorporated, turn the mixer up to a higher setting and mix well for just a minute or two.