In a large mixer bowl cream together butter and sugar on medium-high speed
Add the egg and lemon and vanilla flavors
Mix in flour, baking powder and salt and poppy seeds
As the dough mixes together it will begin to pull away from the sides of the bowl and form a ball
Take the bowl off the mixer
Begin rolling the cookie dough between wax paper or on a lightly floured surface
Cut dough with a cookie cutter
Space cookies 2 inches apart on baking sheets to cook evenly
Bake at 400 degrees for 7-9 minutes
Cool cookies completely before icing