Darla Bakker's Childhood Brownies

Heat oven to 350℉. Grease a 9x13 or 10x15 pan, depending on how thick you like them.
In a large bowl, whisk together the sugar, cocoa, flour, baking powder and salt.
In a small bowl, beat the eggs. Slowly add the melted and cooled butter. If the butter is hot and added rapidly, the eggs will cook. Whisk in the vanilla.
Using a spatula, stir the egg mixture into the flour mixture, stirring just until combined. Do not overmix .
Bake at 350℉ for 20-25 minutes or until a toothpick or cake tester comes out clean. Cool completely before frosting.

From Darla: Boil for 1 minute in microwave. Add 1/2 cup chocolate chips and 3/4 cup miniature marshmallows. Cool slightly and spread on brownies.
From Staci: In a medium saucepan over medium heat, melt together the butter, sugar and milk. Once the sugar is dissolved, turn up the heat slightly. Boil for one minute and immediately remove from the heat. Drop in the chocolate chips and marshmallows and let sit for about 1 minute. Stir until it's all combined. Let the frosting sit for about 2 minutes. Quickly pour the frosting onto the cake and shake the pan slightly to coat evenly. Then let sit so the frosting is smooth and shiny.