Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper to prevent sticking.
In a small bowl, combine the unsweetened plant-based milk with tapioca starch, arrowroot, or cornstarch. Stir until well mixed and set aside. This mixture will help bind the cookies together.
In a large mixing bowl, or stand mixer fitted with a paddle attachment, cream together the vegan butter, sugar, molasses vanilla extract, and plant-based milk slurry. Mix for about 2 minutes until everything is fluffy and smoothly creamed.
Sift the all-purpose flour into the butter mixture, then add the quick oats, cinnamon, ground cloves, baking soda, and salt. Stir until just combined, being careful not to overmix.
Fold in the raisins or cranberries. For Vegan oatmeal chocolate chip cookies, add a handful of dairy-free semisweet chocolate chips. Add chopped walnuts or pecans if you like.
Using a spoon or a clean, slightly wet hand, drop cookie dough balls onto the prepared baking sheet, spacing them about 2 inches apart to allow for spreading. Press the cookies flat using a wet palm if you like a thinner, crispier cookie. My preference is to make these on the smaller size with roughly 4-5 teaspoons of dough each. For sure you can make them larger, but will need an extra minute or two of baking time to accommodate the larger size.
Bake in the preheated oven for 11 to 13 minutes, or until the edges are golden brown and the centers are set. Be sure to watch them closely towards the end of baking time to prevent over-browning.
Remove from the oven and let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. This resting period helps the cookies set and makes them easier to move without breaking.