Ingredients
1/2 cup butter
1 cup white sugar
2 eggs
1 teaspoon vanilla extract
1/3 cup unsweetened cocoa powder
1/2 cup all-purpose flour
1/4 teaspoon salt
1/4 teaspoon baking powder
Frosting
3 tablespoons butter, softened
3 tablespoons unsweetened cocoa powder
1 tablespoon honey
1 teaspoon vanilla extract
1 cup confectioners’ sugar

Directions

Prep  : 25 m   Cook  : 35 m    Ready In  : 1 h

1-Preheat oven to 350 degrees F (175 degrees C). Grease and flour an 8-inch square pan.
2-In a large saucepan, melt 1/2 cup butter. Remove from heat, and stir in sugar, eggs, and 1 teaspoon vanilla. Beat in 1/3 cup cocoa, 1/2 cup flour, salt, and baking powder. Spread batter into prepared pan.
3-Bake in preheated oven for 25 to 30 minutes. Do not overcook.
4-To Make Frosting: Combine 3 tablespoons softened butter, 3 tablespoons cocoa, honey, 1 teaspoon vanilla extract, and 1 cup confectioners’ sugar. Stir until smooth. Frost brownies while they are still warm.

Source :allrecipes