Add the flour, brown sugar, white sugar, baking soda and baking powder together in a medium sized mixing bowl and whisk until the ingredients are combined.
Add in the cubed butter to the dry ingredients. Using clean hands, squeeze the butter and dry ingredients together to create a crumbly mixture
Mix in the poppy seeds.
Add the egg, lemon juice, milk and vanilla extract, and knead together until a dough forms.
Place the dough on a clean flat surface and form the dough into about a 10x10 inch disc.
Cut the dough into 6 equal triangle shaped pieces.
Transfer the 6 pieces onto the parchment lined baking sheet.
Take the tablespoon of melted butter and lightly brush each scone with it and sprinkle white sugar on top.
Place baking sheet in the oven and and bake for 10-12 minutes or until the tops of the scones are a light golden brown.
Remove from the oven and top each scone with a lemon glaze of your choice and garnish with lemon zest.
Notes
Freeze Butter: It's important to keep the butter as cold as possible that way there is no risk of the butter melting before the scones bake. A great way to achieve this is to shred your butter and freezer it.
Glaze: For this recipe you can use any glaze you like, but the glaze from the Starbucks lemon loaf is a perfect lemon glaze for your scone.
Flour: Using pastry flour will result in a perfect light and fluffy scone. For a more doughy scone, try all purpose flour. Stiffing the flour will also help the scone fluffiness.