Preheat oven to 350° F. Line 2 baking sheets with parchment paper.
In a small glass bowl, microwave butter, chocolate, and powdered sweetener till melted; stir till smooth.
In a medium bowl, combine flour, baking powder, and salt.
In a large bowl, using an electric mixer set on high, beat powdered golden monkfruit and eggs until thickened, about 3 minutes.
Beat in chocolate mixture, a little at a time; add vanilla.
With mixture on low, beat in flour mixture.
Let stand until slightly firm, 10-15 minutes.
Using a cookie scoop, drop batter, 2 inches apart, onto baking sheets. Cookies will not flatten out much so you might want to press cookies slightly using back of scoop.
Bake cookies until surface appears dry and starts to crack but centers are very soft and moist, about 10 min. Don’t over cook.
Cool cookies completely.