Remove the Plant Butter from the fridge to come to room temperature. Whisk together the flaxseed meal with 5 tablespoons (72 mL) water until well combined. Place in the fridge for 15 minutes to help it gel and set. These are your “flax eggs.”
Preheat the oven to 325°F/163°C. Line two half-sheet pans or large cookie trays with parchment paper.
Cream the wet ingredients. Use the bowl of a stand mixer fitted with the paddle attachment, or use a large bowl with an electric handheld mixer. Add the softened Plant Butter, almond butter, and coconut sugar or brown sugar and beat well until the ingredients are well incorporated. Add in the flax eggs and vanilla extract, and mix again until everything is well combined.
Mix the dry ingredients. In a medium bowl, whisk together the flour, salt, baking powder, baking soda, and cinnamon. Stir in the oats to combine.
Combine the wet and dry. Add the flour-oat mixture to the butter mixture. Using the mixer on low speed, beat until the dough is well combined.1. NOTE: The dough should be thick yet still a bit moist, but if the dough appears very dry and crumbly (likely a result of adding too much flour), add in a spoon or two of plant-based milk to give it some moisture.
Fold in the mix-ins. Using a silicone spatula, fold into the batter all but 1 ounce (all but 28g) of the the chocolate chunks/chips, along with the walnuts/pecans and currants/raisins. Set aside the remaining chocolate chunks/chips.
Use your hands or a 2-tablespoon cookie scooper to scoop the dough and roll into uniform-sized balls. Line them on the baking sheet (up to 12 per half sheet) and gently press down on the dough a bit to slightly flatten. Add a piece or two the reserved chocolate chunks/chips in the center.
Bake the cookies for 10 to 12 minutes, or until lightly golden. They’ll look somewhat unbaked, but they’ll continue firming up a bit as they rest. Remove from the oven immediately sprinkle with a bit of flaky sea salt, if desired. Let the cookies rest in the pan for 5-10 minutes before transferring to a wire rack to cool completely. Devour. Best when still warm :)