Start by gathering all ingredients. Make sure your butter is softened—it'll blend much easier, creating a smooth texture. Preheat your oven to 175°C (350°F). This will give you enough time to prepare the batter before popping it in to bake.

In a large bowl, combine the softened unsalted butter and sugar. Use a hand mixer or stand mixer to whisk them together until they’re light and fluffy. This step is essential as it incorporates air into the batter, resulting in a lovely texture once baked.

Once your mixture is fluffy, add the ground cardamom, lemon zest, and vanilla extract. Mix them in well. Here’s where the magic starts—you'll notice how that burst of lemon zest combines beautifully with the sweet notes of sugar and the warm undertones of cardamom. It’s a unique experience that starts to awaken your senses.

Gradually add the all-purpose flour into the mixture, mixing gently. The goal is to combine it without overworking the batter. This ensures it remains soft and fluffy. You don’t want a dense final product—just think light and airy.

Prepare a baking dish by greasing it lightly. Pour your batter into the dish, spreading it evenly with a spatula. Now, here comes the most exciting part! Gather your edible flowers. Gently press them into the batter, arranging them however you like. It's a chance to unleash your creativity. Pop the baking dish into the oven and bake for 25-30 minutes or until the edges are golden brown and a toothpick inserted in the center comes out clean. The aroma that fills your kitchen will be irresistible.

Once baked, let it cool for a few minutes before transferring it to a wire rack. Allow it to cool completely. This helps maintain a delicate texture when slicing. Now, it's time for the final touch—an additional sprinkle of edible flowers on top to impress your guests.