In a mixing bowl, combine the sifted flour, baking powder and salt, and stir well.

In a small bowl, or measuring bowl, with a pouring spout, place the chocolate chips and chopped chocolate, and place in the microwave on 10 second intervals, stirring between each interval, just until chocolate is melted. 

When chocolate melts, set aside to cool. In the mixing bowl of a stand mixer combine the softened butter, and sugar, and mix with the whisk attachment until light and fluffy. 

Add the eggs, vanilla, and melted chocolate, and blend until all ingredients are well blended. 

Add the flour mixture, a little at a time until all flour is added to the chocolate mixture.

 Remove the bowl from the mixer, and scrape down the sides and stir all unmixed ingredients until blended. Spray the iron skillets with cooking spray, and set brownie batter and skillets aside.

In a blender, combine the softened cream cheese, egg, vanilla, and sugar until smooth and creamy. 

Pour half of the brownie batter into one of the skillets, and the other half in the second skillet.

Remove the lid from the blender, and pour the cheese cake in the center of the brownie batter, and fill the skillet almost full. 

Place skillets in a 350 degree oven for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean. 

When brownies are done, remove from oven and allow to cool for 20 minutes. 

Serve in the skillet, topped with ice cream, or your favorite toppings, or cut brownie's in half, and place on a plate to serve, topped with ice cream, or toppings of your choice.