For the Cookies
5 1/2 to 6 cups unbleached all-purpose flour, plus more for rolling
1 teaspoon baking soda
1 teaspoon baking powder
1 teaspoon kosher salt
1 cup (16 Tablespoons) unsalted butter, softened
2 cups granulated sugar
3 extra large eggs at room temperature
1 Tablespoon pure vanilla extract
1 1/2 cups sour cream

For the Frosting
1 cup (16 Tablespoons) unsalted butter, softened
1/8 teaspoon kosher salt
1 Tablespoon pure vanilla extract
5 cups confectioners' sugar
4-6 Tablespoons milk
Food coloring
Sprinkles