*Flour notes: all-purpose flour can be substituted for the whole wheat flour and vice versa.
*You can mix the dough in a stand mixer with a paddle attachment, but I find that this cookie dough comes together easily in a standard large mixing bowl with a spatula or wooden spoon.
*Freezing instructions: After these have fermented, find a rimmed baking sheet that can fit into your freezer and line it with parchment paper. Scoop the cookie dough in balls onto the prepared baking sheet. They can be close together, but not touching ideally. Cover with plastic wrap and par freeze for about 2 hours. Once the cookie dough balls are frozen, transfer them to a gallon sized freezer bag. Then, whenever you want to make chewy sourdough oatmeal cookies, you can take out a few or several balls of cookie dough and bake as directed above! The timing from frozen is 10 to 13 minutes.