Preheat the oven to 350°F (175°C). Line an 8×8-inch (20×20-cm) baking pan with parchment paper, leaving some overhang on two sides to make removing the brownies easier.
Add the full-fat cottage cheese, eggs, maple syrup, vanilla extract, and kosher salt to a food processor. Blend until completely smooth and creamy, stopping to scrape down the sides as needed. There should be no visible cottage cheese curds remaining.
1 cup (225 g) full-fat cottage cheese, 2 large eggs, ½ cup (120 ml) pure maple syrup, ½ teaspoon (2.5 ml) vanilla extract, ⅛ teaspoon kosher salt
Transfer the blended mixture to a mixing bowl. Add the finely ground blanched almond flour and natural unsweetened cocoa powder. Stir with a spatula until the dry ingredients are fully incorporated and no pockets of flour or cocoa remain.
½ cup (48 g) finely ground blanched almond flour, ½ cup (43 g) natural unsweetened cocoa powder
Pour the brownie batter into the prepared pan and spread it evenly with a spatula, making sure it reaches the corners.
Bake for approximately 25 minutes, until the edges are set and the center no longer jiggles when the pan is gently moved. A toothpick inserted into the center should come out with a small amount of thick, fudgy batter rather than liquid batter. Avoid baking until the toothpick comes out completely dry, as these brownies are meant to remain soft in the middle.
Remove the brownies from the oven and allow them to cool completely in the pan, approximately 1–2 hours, before adding the icing.
While the brownies cool, combine the natural unsweetened cocoa powder, nut milk, and maple syrup in a small bowl. Stir until smooth and creamy, with no dry cocoa powder remaining.
4 tbsps (21 g) unsweetened cocoa powder, 3 tbsps (45 ml) nut milk, 2 tbsps (30 ml) pure maple syrup
Once the brownies have cooled completely, spread the chocolate icing evenly over the surface. Refrigerate until the icing firms up slightly, then lift the brownies from the pan using the parchment paper and cut into nine squares. Serve chilled for the best texture.