Preheat your waffle maker to get it ready. Whisk the All-Purpose Flour (1 1/2 cup), Granulated Sugar (1/2 cup), Baking Powder (2 teaspoon), and Salt (1 pinch) together in a large mixing bowl.
Pour the zest and juice of the Lemon (2), Buttermilk (1 1/2 cup), and Egg (4) and whisk everything together thoroughly until it is a smooth batter. Switch to a spatula to fold in the Fresh Blueberries (1 cup).
Scoop 1/4 of the batter into the waffle maker and ensure it is evenly spread out. Cook the batter for about 5 minutes, until puffy and golden.
Serve it immediately with 1/4 cup of the Lemon Curd (1 cup) on top and extra blueberries. Repeat this with the remaining batter to get 4 big waffles total. Enjoy!