Step 1: Preheat your oven to 350°F (175°C) to ensure even baking.
Step 2: In a large mixing bowl, whisk together the almond flour and baking powder. In a separate bowl, combine the sweetener, eggs, melted coconut oil, and lemon extract. Beat until frothy and well-blended.
Step 3: Gradually add the dry ingredients to the wet mixture, stirring until fully incorporated. If using yellow food coloring, add it now and mix until desired color is reached.
Step 4: Pour the batter into your prepared cake pan. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Allow to cool in the pan for 10 minutes before transferring to a cooling rack.
Step 5: In a mixing bowl, beat the softened cream cheese with a hand mixer until smooth. Add the lemon juice and sugar-free powdered sugar, mixing until creamy.
Step 6: Once the cake is completely cooled, spread the frosting generously over the top, using a spatula to create swirls or keep it smooth.