Preheat oven to 350 degrees F. Line 2 baking sheets with parchment paper or reusable nonstick mats.
In a medium bowl, combine flour, baking soda, and salt.
In a saucepan over medium heat, melt coconut oil. Turn heat off and stir in cocoa, sugar, maple syrup, yogurt, and vanilla. Then stir in the flour mixture until just moist.
Using a tablespoon scooper, drop onto the lined baking sheets.
Bake for about 8-9 minutes, until just starting to set. Let rest on baking sheet for a couple of minutes (if you can wait that long!) then transfer to a cookie rack and enjoy!