01 -
Heat your oven to 350°F and line a baking sheet with parchment paper so the cookies don't stick.
02 -
In a bowl, whisk the flour, baking powder, baking soda, and salt together and set aside.
03 -
Beat the softened butter and sugar until it's fluffy and light - about 3-4 minutes with a mixer. It should look pale and airy.
04 -
Mix in the egg and vanilla until everything's smooth and well combined.
05 -
Slowly add the dry ingredients to your butter mixture, stirring just until combined. Don't overmix or your cookies might turn out tough.
06 -
Gently fold in the blueberries and lemon zest. If you want purple cookies, add the food coloring now and mix until the color is even.
07 -
Scoop dough into 1-inch balls, place on your baking sheet, and slightly flatten each one. Sprinkle some coarse sugar on top for extra crunch and sparkle.
08 -
Bake for 12-15 minutes until the edges turn golden. The centers might look a bit underdone, but that's what makes them chewy!
09 -
Let the cookies rest on the baking sheet for 5 minutes, then move to a wire rack to finish cooling. Enjoy once they're cool!