Have the pastry bag and tip handy for after the biscuits cool.
While the pudding is chilling....
Preheat over to 425 degrees F (219 degrees C).
Cut the butter and baking mix until crumbly.
Beat the egg and sugar together until smooth (with a whisk).
Add egg mixture, water, and crumbs together and stir until well mixed
Drop onto lightly greased cookie sheet (about one tablespoon each biscuit).
Bake in preheated over until golden on edges (about 8-12 minutes).
Remove from the over and cool on rack.
While biscuits are slightly warm....
Using the pastry bag and tips, draw a cross on each biscuit with the lemon pudding.
Dust lightly with powdered sugar
Refrigerate and serve chilled
Refrigerate all left overs