Preheat oven to 375°F. Line 10 muffin cups with paper liners.
In a large bowl, whisk together 4 large eggs, 2 large egg yolks, 1/3 cup tahini paste, 1/2 cup + 2 tablespoons pure maple syrup, and 1/2 tablespoon pure vanilla extract until smooth and well combined.
Add 1/2 cup sifted coconut flour, 1/4 cup unsweetened cocoa powder, 1/4 teaspoon salt, and 1/2 tablespoon baking powder to the bowl. Whisk until the batter is smooth and no dry streaks remain, scraping the bowl sides as needed.
Divide the batter evenly among the 10 lined muffin cups, filling each about 3/4 full.
Let the filled muffin tin sit for 5 minutes to allow the coconut flour to absorb the liquids.
Bake in the preheated oven until a toothpick inserted into the center of a muffin comes out clean, about 16–18 minutes.
Remove the pan from the oven and let the muffins cool to room temperature in the pan. Then transfer the muffins to a wire rack to cool completely before serving.