01 -
Preheat oven to 350°F. Line 2 baking sheets with parchment paper.
02 -
In a large mixing bowl, mix together granulated sugar and lemon zest with fingers, allowing the zest to open up and become more fragrant.
03 -
Add butter and brown sugar and mix on medium-high speed for about 3-4 minutes, or until light and fluffy.
04 -
Add egg yolk, vanilla, and lemon juice and mix together.
05 -
Slowly mix in salt, baking powder, baking soda, and flour, being careful not to overmix. Stop when there are still some flour remnants around the bowl.
06 -
Chop or break up frozen raspberries into little pieces and lightly fold into cookie dough. Avoid overmixing to prevent juice from bleeding through the dough.
07 -
Scoop the dough into large balls using a 3 tablespoon cookie scoop. Place 5 cookie dough balls on your lined baking sheet. Sprinkle with flaked salt. Bake the cookies for 12-15 minutes, until they are a nice light golden brown around the edges. Let them sit on the pan after baking to finish cooking slightly in the middle.