Creating Gooey Brownies is straightforward when you follow these simple steps:

1. Preheat the Oven: Set your oven to 350°F (175°C) and grease a 9×13-inch baking pan.
2. Melt the Butter: In a medium saucepan, melt the unsalted butter over low heat.
3. Mix in Sugar: Remove from heat and stir in the granulated sugar until well combined.
4. Add Eggs and Vanilla: Mix in the eggs, one at a time, followed by the vanilla extract until smooth.
5. Combine Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt.
6. Combine Mixtures: Gradually add the dry mixture to the wet ingredients, stirring until just combined.
7. Fold in Chocolate Chips and Nuts: If desired, fold in the chocolate chips and chopped nuts for added texture.
8. Pour Batter into Pan: Spread the batter evenly into the prepared baking pan.
9. Bake: Place in the oven and bake for 25-30 minutes, or until a toothpick inserted comes out with a few moist crumbs.
10. Cool: Once baked, remove from the oven and allow to cool in the pan for 10-15 minutes before cutting into squares.

Following these steps will ensure your Gooey Brownies turn out rich and delicious every time!