Preheat the oven to 160 ° C (325 ° F). Line a baking sheet with parchment paper.
In a bowl, whisk butter, sugar and vanilla until whitened. In another bowl, combine flour, ginger powder and baking powder. Incorporate with the fork to the previous mixture. Add water to help. Shape into a ball.
Share the dough in half and lower it on a floured surface. Cut with round or patterned cutters about 6 cm (2 1/4 in), we choose heart shape for valentine. Place them on the baking sheet.
Bake in the top of the oven for 12-15 minutes. Let cool on rack.