01 -
Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
02 -
In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla extract. In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the butter mixture, mixing until just combined.
03 -
Roll the dough into 1-inch balls and place them on the prepared baking sheet. Make an indentation in the center of each ball with your thumb. Spoon a small amount of lemon curd into each indentation.
04 -
Bake in the preheated oven for 12-15 minutes, or until the edges are golden. Allow cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.
05 -
In a small saucepan, cook the blueberries over medium heat until they release their juices. Strain the juice and discard the solids. In a medium bowl, combine the powdered sugar, milk, blueberry juice, and food coloring (if using). Stir until smooth.
06 -
Once the cookies are cool, spread the blueberry icing over the tops.