Whisk together flour, baking powder, baking soda, salt, and sugars. Make sure to mix well.
In another bowl, combine vanilla extract, milk, and butter. Add in dry ingredients and mix. Refrigerate dough for at least 30 minutes.
Shape dough into tablespoon sized balls, or roll-out cookies and cut out with cookie cutters. Refrigerate another 15 minutes.
Bake in preheated oven for 8-9 minutes. They will be slightly browned, but make sure not to overcook. Allow to cool on baking sheet 5 minutes. Then transfer to a cooling rack. These cookies are actually better {sweeter} when they are cool, so I like to wait before eating them.
Notes
*If you're interested in icing these cookies, this quick & easy icing works great with these sugar cookies!*You can also use whole wheat pastry flour in place of the white whole wheat, but white whole wheat flour is usually easier to find & less expensive.