Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on the sides for easy removal.
In a large mixing bowl, whisk together the melted butter, cane sugar, salt, and vanilla extract until smooth. Add the eggs one at a time, whisking well after each.
Stir in the melted chocolate chips until combined. Add cocoa powder, almond flour, and baking powder. Mix just until incorporated — the batter will be thick and fudgy.
Spread the batter evenly into the prepared pan. Bake for 18–20 minutes, until the top looks set but the center is still slightly soft. Remove from the oven.
While the brownies bake, whisk together brown sugar, maple syrup, melted butter, vanilla, salt, and the egg in a medium bowl. Stir in the pecans until well coated.
Gently spoon the pecan mixture over the partially baked brownies, spreading evenly. Return to the oven and bake for 20–25 minutes, or until the topping is golden brown and bubbling slightly.
Let the brownies cool in the pan for at least 1 hour before slicing. The pecan topping will firm up as it cools.
Lift the brownies out of the pan using the parchment paper. Slice into squares and enjoy!