Preheat the oven to 350 degrees F.

In a medium bowl, whisk together the flours, cream of tartar, baking soda, and salt. Set aside.

In a large mixing bowl, beat the butter, sugar, and eggs together using an electric mixer fitted with a whisk or beaters. Slowly add in the flour mixture until it's thoroughly mixed.

Use a 1 or 1 ½ tablespoon cookie scoop to form balls from the dough. Alternatively, you could roll the dough between your hands to create balls.