Preheat oven to 325ºF. Line one or two baking sheets (depending on the size) with parchment paper. Set aside.
In a large mixing bowl, whisk together the dry ingredients.
Add wet ingredients and mix everything together with a spoon or fork.
Using your hands, knead dough for several minutes, eventually forming a dough ball. The dough will feel dry at first, just keep folding and kneading until you're left with a Play-doh-like consistency.
Sandwich doughball in between two pieces of parchment paper.
With a rolling pin, roll dough to about 1/4" thick. Stamp with cookie cutters and place biscuits on the baking sheet.
Bake for 25 minutes. Once the timer goes off, flip treats over and bake another 5 minutes.
Transfer to a wire rack to cool.