Make the Cinnamon Sugar Swirl:
Combine the melted butter, sugars, and cinnamon in a bowl. Mix until combined. Add the flour and mix again until a wet dough forms. Portion out the mixture into small balls, then place in the freezer ot set while you make the dough.
35 grams Vegan Butter, melted, 31 grams Brown Sugar, 1 tsp. Cinnamon, 30 grams Whole Wheat Flour, All Purpose is fine too, 25 grams Granulated Sugar
Make the Toast Crumbs:
Carefully slice your stale bread, as it will be hard to slice. Toast the slices in a toaster until just golden brown.
2-3 slices of Stale Sourdough Bread
Spread the vegan butter onto your toast slices. Break up the slices so that they can fit in your food processor, then process until bread crumbs form. It's okay to have a little variation in size here, but you don't want any crumbs that are too big.
Vegan Butter
Pour the processed crumbs into a bowl, and mix in the cinnamon sugar until completely coated.
1 tsp. Cinnamon, 1/8 cup Granulated Sugar
Brown the Butter:
In a saucepan, add the vegan butter. Over medium heat, melt the butter. As the butter starts to bubble, put the heat down to medium-low and stir continuously. Eventually, the butter will begin to brown and have a toasty aroma. If you are having trouble seeing how browned your butter is, take it off the heat and wait for the bubbles to die down to check the color of the butter. Once browned, take off the heat and pour into the bowl of a stand mixer.
80 grams Vegan Butter, browned
Make the Dough:
To the bowl of a stand mixer (with the slightly cooled brown butter), fitted with the paddle attachment, or by hand with an electric mixer, add the brown sugar and granulated sugar, as well as the cold cubed butter. Mix on medium speed until pale, light, and fluffy, about 3-5 minutes.
60 grams Brown Sugar, 165 grams Granulated Sugar, 50 grams Vegan Butter, Cold and Cubed
Add the maple syrup, sourdough discard (if using), vanilla, miso, and plant milk. Mix again until fully combined, scraping down the sides of the bowl as needed.
1.5 tsp. White Miso Paste, 1 tsp Vanilla Extract, 40 grams Sourdough Discard, or replace with equal parts Vegan Yogurt or Vegan Sourcream*, 28 grams Maple Syrup, 16 grams Plant Milk
In a separate bowl, whisk together the flour, baking soda, baking powder and salt. Add the dry mix to the stand mixer, along with the reserved toast crumbs for the dough (86 grams/ scant 1 cup). Mix on low speed for about 30 seconds to reduce the amount of dry ingredients that will fly out the sides, then go up to medium speed until just mixed. You don't want to overmix the dough.
250 grams All Purpose Flour, 1/2 tsp. Baking Soda, 1/2 tsp. Baking Powder, 1/4 tsp. Salt, 86 grams Sourdough Cinnamon Toast Crumbs, made above
Add the frozen cinnamon swirl balls to the dough and fold them in using a spatula. Try to get the balls evenly distributed.
Portion and Chill the Dough:
Using a small ice cream scoop, scale, or by estimate, roll out 20 even dough balls. Mine came out to about 49-50 grams each, using a roughly 1/4 cup ice cream scoop. Slightly press down the dough balls into a hockey-puck shape before rolling. Roll each dough ball in the remaining toast crumbs, pressing them in lightly to help them stick. Coat both sides
Place the coated dough balls on a parchment-lined plate or baking sheet. It's okay to stack them slightly. Refrigerate for 12 hours, preferably 24 hours.
1 hour before baking the cookies, take them out of the fridge to come to room temperature:
Preheat the oven to 375 degrees Fareinheit.
Bake the cookies. Place them about 2 inches apart on a cookie sheet. Place in the oven for 8 minutes, rotate the pan, and bake for another 3-5 minutes. The cookies will have slightly golden brown edges. They won't spread a whole lot, but will have some ripples on top. Allow to cool completely on the pan.