Preheat the Oven: Start by preheating your oven to 350°F (175°C). This ensures a perfect temperature environment for your brownies to cook.
Mix Dry Ingredients: In a large bowl, whisk together the flour, sugar, cocoa powder, salt, and baking powder.
Add Wet Ingredients: Melt the butter and let it cool slightly before adding it to the dry ingredients. Crack the eggs into the mixture, add vanilla extract, and stir until just combined.
Prepare the Skillet: Grease your cast iron skillet with a little butter or cooking spray to prevent sticking.
Add the Batter: Pour the brownie batter into the skillet, spreading it evenly with a spatula.
Bake: Place the skillet in the oven and bake for 25-30 minutes. The edges should be set and the center slightly soft.
Add Chocolate Chips: Five minutes before the end of baking, sprinkle chocolate chips over the top for extra richness.
Serve: Allow the brownie to cool slightly before serving. Pair with vanilla ice cream for the best experience.