Gooey butter keto cake is a low-carb version of the classic St. Louis dessert. This cake features a dense, moist base made with almond or coconut flour and sweetened with keto-friendly sweeteners like erythritol or stevia. The cake is topped with a creamy, gooey layer that resembles a rich custard or cheesecake, providing a delightful contrast in texture. This keto-friendly treat captures the indulgent flavors of the original dessert while remaining suitable for those on a ketogenic diet or anyone seeking a healthier alternative to traditional cakes.