Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour a round cake pan, or line it with parchment paper.
Mix Wet Ingredients: In a large bowl, whisk together the Greek yogurt, eggs, honey (or maple syrup), vanilla extract, and lemon zest until smooth.
Incorporate Dry Ingredients: In another bowl, combine the almond flour, baking powder, and salt. Gradually add the dry mixture into the wet ingredients, stirring until fully combined.
Pour and Bake: Pour the batter into the prepared cake pan. Smooth the top with a spatula and bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Cool and Serve: Let the cake cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely. Serve plain, or top with your favorite fruits or a dollop of yogurt!