Preheat oven to 350°F (175°C). Grease a 9x13 inch baking pan.
Melt butter in a medium saucepan over low heat. Remove from heat and stir in sugar. Add eggs and vanilla and stir until blended.
In a separate bowl, combine cocoa powder, flour, baking powder, and salt. Gradually add the dry ingredients to the wet ingredients, stirring until combined.
Stir in the pecans and chocolate chips. Pour the batter into the prepared baking pan.
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Cool before cutting and serving.
Interesting Facts
Brownies were first created in the late 1800s in the US.
The name “brownies” comes from the color of the dessert, which is a dark, chocolate brown.
Brownies are one of the most popular desserts in the world.