These are basic, classic, delicious cookies, packed with nostalgia and topped with colorful sugar. The hardest thing about the recipe is mixing the sheer amount of ingredients in the bowl. Do note that the dough requires chill time prior to baking.
Beat butter with an electric mixer until creamy. Add the sugar, cream of tartar, and salt. Gradually mix in as much flour as possible, then stir by hand to get to at least 4 1/2 cups. Dough should be stiff.
Divide dough into thirds and shape into logs about 1 1/2 inches in diameter. Enshroud in plastic wrap and chill until firm, at least 1 hour.
Preheat oven at 375 degrees. Line baking sheet with parchment paper. Slice dough rolls into 1/4-inch slices, reshaping with hands as necessary, and place them on cookie sheet with plenty of space to spread. Add decorating sugar on top.
Bake until the cookie edges are turning golden brown, 8 to 10 minutes.
Depending on how cookies are cut, makes anywhere from 60 to 90 cookies.
OM NOM NOM!