01 -
Line a 8×12 inch (20×30 cm) brownie pan or similar-sized baking dish with parchment paper, leaving some overhang for easy removal later. Roughly chop the dark chocolate and set half aside. Melt the other half using a double boiler or in short intervals in the microwave, stirring frequently. Roughly chop the dates if they're particularly large or firm.
02 -
In a food processor, combine the chopped dates, almond butter, cocoa powder, salt, and the melted chocolate. Process until the mixture comes together - you can leave it slightly chunky for texture or blend until completely smooth, depending on your preference. If your dates are on the dry side, you might need to process longer or add a teaspoon of water to help everything bind together.
03 -
Transfer the mixture to your lined pan and use the back of a spoon or your fingers (slightly dampened to prevent sticking) to press it firmly and evenly into the pan. Place in the freezer for 15 minutes to firm up quickly, or refrigerate for about an hour if you're not in a rush.
04 -
Once chilled and firm, lift the entire slab out of the pan using the parchment paper overhang. Cut into 20 equal squares or rectangles with a sharp knife. Melt the remaining chocolate and drizzle it over the brownies using a spoon or piping bag. While the chocolate is still wet, sprinkle with flaky sea salt if desired. Return to the refrigerator for 5 minutes to set the chocolate before serving.