Preheat your oven to 350°F (175°C) and line two cookie sheets with parchment paper to prevent sticking and ensure easy cleanup.
Whisk together the dry ingredients in a medium bowl – combine flour, baking powder, and salt until well integrated, then set aside.
Cream the butter and sugar in a large bowl using an electric mixer or vigorous hand mixing until light and fluffy, about 2-3 minutes. The mixture should turn slightly lighter in color.
Add eggs one at a time, beating well after each addition, then mix in the lemon zest, lemon juice, and vanilla extract. If using food coloring, add a few drops now for a more vibrant yellow color.
Gradually incorporate the dry ingredients into the wet mixture, stirring just until combined. Avoid overmixing, which can make the cookies tough.
Chill the dough for 10-15 minutes if it feels too soft to handle. This brief chilling helps the cookies hold their shape better during baking.
Place powdered sugar in a small bowl and roll tablespoon-sized balls of dough in the sugar until completely coated. The thicker the coating, the more dramatic the crinkle effect.
Arrange the coated dough balls on the prepared cookie sheets, leaving about 2 inches between each one to allow for spreading.
Bake for 10-12 minutes until the edges are set but the centers still appear slightly soft. The cookies should not brown much except slightly at the edges.
Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely. The crinkles will become more pronounced as they cool.