Pour the brownie mix into a mixing bowl, and add the eggs, vegetable oil, and water as called for on the box. Butter a cookie sheet and set aside.
Prepare the brownie mix according to package directions.
Box brownie recipe with marshmallows. (you don't want the marshmallows. In a large bowl, beat the eggs, brown sugar and vanilla until blended. Add the toffee and walnuts and stir to combine.
Cool the cupcakes for 15 minutes in the pan, then remove and place on a cooling rack. Preheat oven to 350 degrees. Bake for about 3 minutes, or until the marshmallows have puffed up.
Remove brownies from oven, then evenly sprinkle the mini marshmallows on top. Transfer the pan to a wire rack and prepare. Combine the flour, baking powder and salt;
If you are in the mood for ooey, gooey, chocolate goodness marshmallow brownies are the perfect solution. In a large mixing bowl, whisk together brownie mix, flour, brown sugar and salt. Return the pan to the oven and bake until the marshmallows melt over the cupcakes, 3 minutes more.
Immediately sprinkle the marshmallows on top of the hot brownies and return to the oven for 2 minutes, allowing the marshmallows to puff slightly. Pour into a greased 9×9″ pan and bake for 30 minutes, or until almost done. The combination of fudge brownies, melted marshmallows, and chocolate frosting will satisfy.
Gradually add to batter and beat until mix well. Once brownies are cooked, remove from oven and spread with marshmallows.