Preheat oven to 375 degrees Fahrenheit.
Place your stand mixer bowl or large mixing bowl on your food scale and add: sourdough discard, turbinado sugar (and erythritol, if using), molasses, eggs, and vanilla extract.
Use cake paddle or paddle attachment to mix well.
Add flour, oats, baking powder, baking soda, and sea salt to wet ingredients in mixer bowl.
Switch to dough hook, if necessary. Mix well.
If dough is a bit runny, let sit for up to 10-12 minutes before adding additional ingredients (SEE NOTES BELOW)
Finally, add one or a combination of the variation ingredients below. Mix until just incorporated.
Use cookie scoop to place cookie dough balls 2-3 inches apart onto parchment-lined baking sheet.
Bake at 375* for 12-16 minutes or until a light golden brown. Times may vary a bit depending on the variation ingredients you use.