Nutella Brownies - cooking recipe

Ingredients

1 cup melted butter
1 cup sugar
1 cup brown sugar
2 teaspoons vanilla extract
4 large eggs, at room temperature
1 cup all-purpose flour
3/4 cup cocoa
1/2 teaspoon baking powder
1 cup nutella

Preparation

Preheat oven to 350-degrees F. Grease a 13x9\" glass baking dish.
Using an electric mixer, combine sugars & vanilla with melted butter. Add the eggs 1 at a time, beating well after each egg.
In a separate bowl, whisk together flour, cocoa, and baking powder.
Add flour mixture slowly to the butter, sugar, and egg mixture. Mix well.
In the microwave, heat Nutella until it thins out a bit (approximately 1 minute). Stir it well. Stir the softened, melted Nutella into the batter. then pour it into a prepared baking dish.
Bake for 30 minutes.
Allow to cool completely before cutting.
For a special treat, frost with chocolate buttercream icing.