Step 1

Using a stand mixer with paddle attachment mix together softened butter with zest of 2 lemons making sure to scrape down sides halfway through mixing.

Step 2

Mix granulated sugar with butter just until combined and then mix in lemon extract.

Step 3

Sift together flour and salt. With stand mixer turned off, add all of the flour mixture and mix on the lowest speed until dough just comes together, about 2 mins. See Note # 5 below.

Step 4

Place dough between two layer of parchment paper. Using the under side of a large cookie sheet press dough to flatten. Wrap the dough with the edges of parchment and chill for 30 mins. See Note # 6 below.

Step 5

Preheat oven to 350℉. Zest 3rd lemon and mix with sparkling sugar.

Step 6

Roll chilled dough into 1/2 inch thickness and form into a rectangle as best as possible. Using a sharp knife cut cookies into 1 inch by 3 inch rectangles.

Step 7

Using a spatula place cookies on 2 ungreased cookie sheets. Evenly sprinkle each cookie with sparkling sugar mixture.

Step 8

Bake for 20-25 mins or until corners turn a light golden brown, making sure to rotate cookie trays halfway through baking.

Step 9

Let cookies cool on cookie sheets for about 10 minutes and then carefully transfer with a spatula to a wired rack to completely cool.