Fudge brownie pie

Fudge brownie pie 3/4 cup flour 1 cup of regular sugar 1/4 cup unsweetened cocoa powder, sifted 1 teaspoon baking powder 1/4 tsp salt 4 ounces butter, melted 2 large eggs, beaten 2 teaspoons vanilla 1/2 cup chopped toasted pecans 2 handfuls of mini marshmallows For the frosting: 2 ounces butter, melted (1/4 cup) 1 ounce cocoa powder, sifted (1/4 cup) 2 ounces evaporated milk (1/4 cup) 1 cup powdered sugar, sifted (8 ounces) Preheat the oven to 350 degrees. Butter a 9 inch spring form pan set aside. Whisk together the flour, sugar, cocoa powder, baking powder and salt in a bowl. Beat together the butter, eggs and vanilla. Add to the dry ingredients and mix until smooth. Stir in the toasted nuts. Pour into the prepared pan. Bake on a middle shelf of the oven for 25 to 30 minutes, or until a toothpick inserted in the center comes out clean. Immediately sprinkle the marshmallows on top and return to the oven for a few minutes to melt the marshmallows. Remove from the oven and carefully spread the chocolate frosting over top. To make the chocolate frosting mix all ingredients together in a bowl, beating with an electric whisk until smooth and thick. Spread on the hot marshmallows. Let cool completely. Cut into wedges to serve.