Preheat the oven to 350 Fahrenheit.
Line a 12 cavity muffin tin with liners and set aside.
In a medium mixing bowl, whisk together all wet ingredients for about 1 minute.
Add in the flour, baking powder and salt and whisk well, about 30 seconds.
Whisk in the poppy seeds.
Scoop the batter into the prepared muffin tin, filling each about 3/4 of the way up.
Bake for 20-25 minutes or until a toothpick comes out clean. All ovens are different so keep an eye on them.
Remove from the oven and let cool in the pan for 20 minutes, then transfer each cupcake onto a wire rack to finish cooling.
Once cool, I like to spread about 1/2 tablespoon of lemon curd on top the cupcakes, then add on the lemon buttercream and extra poppy seeds. Delicious with or without the lemon curd!