The Best Easy Brownies

It was the surprisingly easiest brownie that I ever made – just a few ingredients and less than 10 minutes to prepare. Amazing!
Ingredients:
1/2 cup melted butter
1/2 cup sugar
2 eggs
1/3 cup cocoa powder
1/2 cup all-purpose flour
1/4 tsp salt
1/2 tsp baking powder
1/4 cup chocolate chips

Directions:
Preheat oven to 350°.; Grease and flour an 8" x 8" baking pan.
Combine flour, cocoa powder, and salt in a mixing bowl.
With a handheld mixer, beat butter and sugar. Add eggs and mix well. Stir flour mixture into egg mixture. Add vanilla and chocolate chips. Spread the batter onto the prepared baking pan. Bake in preheated oven for 25 to 30 minutes or until a toothpick inserted into the center comes out clean. Let cool completely before cutting into 9 squares. Sprinkle powdered sugar on top, if desired.