Rocky Road Brownies

Step 1 -Preheat the oven to 350 degrees F.

Step 2 -Line the bottom of an 8-inch square baking pan with parchment paper, leave an overhang on two sides so you can easily pull the brownies out.

Step 3 -Grease the baking pan well.

Step 4 -Set a heatproof bowl over a pan of water that is simmering,

Step 5 -Add in the butter and 1 cup of the chocolate chips, stirring occasionally until the chocolate is melted, about 3-5 minutes.

Step 6 -Move the chocolate mixture off of the heat, and stir in the granulated sugar, the brown sugar, and the salt.

Step 7 -Gradually add in the eggs, stirring constantly to prevent the eggs from scrambling.

Step 8 -Add the flour and mix until just combined but avoid overmixing.

Step 9 -Spread out the batter evenly into the prepared pan.

Step 10 -Bake until a toothpick inserted into the center comes out with only a few moist crumbs attached, about 25-35 minutes.

Step 11 -Move the brownies out of the oven, and sprinkle with the remaining chocolate chips, the marshmallows, and the walnuts.

Step 12 -Bake again until the chocolate is shiny and the marshmallows have puffed, about 5 minutes.

Step 13 -Let the brownies cool completely in the pan.

Step 14 -Lift the brownies from the pan onto a work surface, and cut them into 16 squares.

Step 15 -Serve.