For the best texture, use well stirred natural almond butter that is neither too dry nor overly runny, as this controls how fudgy the brownies become. Adjust sweetness by adding a little extra erythritol or monk fruit blend if your cocoa powder is very dark. If you prefer cakier brownies, bake them for a few extra minutes until the center is fully set. Store leftovers in an airtight container at room temperature for up to three days, refrigerate for up to one week, or freeze in a single layer then transfer to a bag for longer storage. Warm a brownie briefly in the microwave or oven before serving to bring back the soft, gooey center.