Preheat oven to 350°F. Line an 8×8 pan with parchment paper and spray with nonstick cooking spray.
In a small bowl, microwave chocolate and butter together in intervals until they are fully melted. Stir together gently until chocolate is fully combined with melted butter. Let cool.
In a medium bowl, add melted chocolate. While continuously whisking, pour in beaten eggs. Whisk in yogurt and Splenda Magic Baker Sweeteners.
Stir together cocoa powder, flour and salt. Add flour mixture to the wet ingredients, and stir together until fully incorporated. Fold in chocolate chips. Mixture will be extremely thick.
Scoop batter into prepared pan. Smooth out batter on the top.
Bake for 35-40 minutes. Brownies may be a little undone in the middle. Let cool slightly, slice and serve!