01 -
Preheat your oven to 350°F. Grab a baking sheet and place parchment paper on it so nothing sticks.
02 -
Stir together the flour, baking soda, baking powder, and salt in a mixing bowl. Keep it aside for now.
03 -
Use a mixer to beat your butter and sugar until it looks fluffy and feels light. This takes 3-4 minutes.
04 -
Add the egg and vanilla to your butter mix. Whisk everything together until it’s smooth.
05 -
Slowly pour the dry ingredients into the wet ones. Mix them just until combined. Overmixing could mess up the texture!
06 -
Carefully mix in the blueberries and lemon zest. Add those few drops of purple dye now if you’re going for color. Stir until the shade looks even.
07 -
Scoop out 1-inch balls of dough, put them on the baking tray, and gently press them down. Sprinkle coarse sugar on top for crunch.
08 -
Pop the tray into your oven and bake for roughly 12-15 minutes. The edges should look golden, but the center will still be soft and chewy.
09 -
Leave cookies on the tray for 5 minutes to settle. Then, move them to a wire rack to cool fully. Dig in once they're ready!