In a bowl, whisk together the all purpose flour, baking powder and salt. Set aside.
Whisk together the melted butter, egg, brown sugar, granulated sugar, vanilla extract, milk and yogurt.
Add the dry ingredients to the wet ingredients and whisk. Add the chocolate chips and fold until evenly incorporated. Spoon/pipe the batter into the donut cavities. Bake for 11-12 minutes at 350F.
Microwave the chocolate, butter and light corn syrup together in 15 second increments, stirring in between each increment, until completely melted and smooth.
Dip one side of the baked donut into the chocolate frosting, then top with more mini chocolate chips if desired. Enjoy!