Here is a yummy recipe from my maryjane magazine.
1 cup flour
1/4 tsp. baking powder
1/4 tsp. baking soda
1/4 tsp. salt
1 1/2 tsp. ground ginger
1/2 cup butter, softened
1/4 cup sugar
1/4 cup dark brown sugar
1 tbsp. molasses
1 tsp. pure vanilla extract
2/3 cup powdered sugar
5 tsp. milk
Preheat oven to 325 F. Generously butter a 10 1/2 cast-iron griddle pan.
Make cookie: In a small bowl, combine flour, baking powder, baking soda , salt, ginger; set aside.
In a medium bowl cream butter, sugar, and brown sugar together, scraping bowl occasionally. Add egg, molasses, and vanilla; continue mixing until smooth.
Add flour mixture to butter mixture and mix until smooth. Spoon mixture onto prepared griddle pan. Lightly butter hands and flatten mixture so that it touches the edges of the pan. Bake cookie for 25 minutes. Cool completely in pan.
Once cookie is cool, prepare icing: In a small bowl, combine powdered sugar and milk; mix until smooth. Drizzle mixture over center of cookie. Using the back of a spoon, spread icing out in a smooth layer. Let dry for 10 minutes and enjoy.