Preheat oven to 350° F. Butter 8” cake pan and set aside.
In the bowl of a stand mixer fitted with paddle attachment, cream butter, sugar, vanilla, and almond extra until smooth. Add in eggs. Continue to beat until thoroughly incorporated.
In a large bowl, whisk together flour, almond flour, baking powder, and salt.
In a large measuring cup, whisk together buttermilk and baking soda. Let sit for 3 minutes to activate.
Alternate adding flour mixture to mixing bowl in three addition, alternating with buttermilk mixture. Mix on low-medium speed until there are no longer any dry streaks of flour. Scrape down asides of bowl as needed.
Transfer batter to prepared cake pan. Using an offset spatula, make sure the batter is evenly spread. Bake for 35-40 minutes, rotating pan midway through baking.
Let cake cool in pan for 5-10 minutes. Unmold and cool to room temperature on wire rack.