Preheat your oven to 350 degrees
Whisk together 1 1/8 cup of all purpose flour, 1 teaspoon of baking powder, 1/4 teaspoon of salt and 1 tablespoon of poppyseeds in a small bowl
Using a stand mixer or an electric hand mixer, cream together 6 tablespoons of butter and 3/4 cup of sugar
Add 1 tablespoon of lemon zest, 1 egg, 1/2 cup of whole milk and 1/8 cup of lemon juice and mix until smooth and fully combined
Add dry ingredients (flour, baking powder, salt and poppyseeds) and mix until combined
Divide the batter between 12 lined cupcake tins
Bake on a middle rack at 350 degrees for 18-20 minutes or until a toothpick comes out of the center of a cupcake clean
Transfer cupcakes onto a cooling rack to fully cool before frosting