In the bowl of a stand mixer, combine the sugar and butter and beat using the paddle attachment until light and fluffy—about 3 minutes. Slowly add the eggs, one at a time, stirring until incorporated, then add the molasses and mix again.
In a separate large mixing bowl, whisk together the flour, ginger powder, cinnamon, baking soda, and salt. Add the dry ingredients to the wet ingredients and mix on low speed until combined and no streaks of butter remain.
Spread the gingerbread cookie dough onto a greased 26" by 18" cookie sheet, getting the cookie dough as evenly spread as possible.
Bake in a preheated oven at 350 degrees for 18-20 minutes, or until golden brown on the edges. Once cooked, remove from the oven and let them cool.
Cream Cheese Frosting
In the bowl of a stand mixer, combine the cream cheese, butter, and vanilla. Beat with the paddle attachment until light and fluffy—about 3 minutes. Add the powdered sugar and beat on low speed until well incorporated, then slowly add in 1-2 tablespoons of milk until the frosting is light and fluffy again.
Spread the cream cheese frosting on the cooled cookie bars and top with sprinkles or other decorations before cutting into individual bars or squares. Enjoy!
Video
Notes
Storing instructions: store in an airtight container in the fridge for up to 3 days, or in the freezer for up to 3 months. To thaw, transfer them to the fridge overnight.