01 -
Turn your oven on to 350°F (175°C) and cover a baking sheet with parchment to avoid sticking.
02 -
Stir the flour, salt, baking powder, and baking soda in a medium bowl. Keep it on the side for later.
03 -
Use an electric mixer to cream the butter and sugar until it’s fluffy. This will take about 3-4 minutes.
04 -
Add the egg and vanilla into the whipped butter-sugar mix, and stir well until smooth.
05 -
Little by little, add the dry mix into the wet, stirring gently to just blend it. Overmixing can make cookies tough.
06 -
Fold in the blueberries and lemon zest with care. Put in the food coloring now and stir until the dough is evenly colored, if you’re using it.
07 -
Roll the dough into roughly 1-inch balls, set them on the parchment, and lightly press each one. Sprinkle some coarse sugar over the top.
08 -
Bake for around 12 to 15 minutes. The edges should be lightly golden, and the center might seem soft—that’s perfect for chewy cookies.
09 -
Let the cookies sit on the baking sheet for 5 minutes, then move them to a wire rack to cool all the way.