Preheat the oven to 375 F (190 C) and prepare two baking sheets by lining them with parchment paper or silicone mats.
Sift together the flour, baking powder, ginger, cinnamon, and salt. Set aside.

Cream the butter and sugar for 2 to 3 minutes using an electric mixer.
Add the egg and beat at high speed for an additional minute.
Add the milk and vanilla extract and beat at high speed for 30 seconds.
Add the jam and beat at low speed for 1 minute.

Add the dry ingredients, with the mixer at low speed, until they are well combined. The dough will be quite thick.

Shape the dough into balls the size of a golf ball, then flatten them with a potato masher.

Bake the biscuits for 10 minutes, then let them rest for 2 minutes on the baking sheets before transferring them to a cooling rack.
Dust with powdered sugar.