To whip up a batch of Rocky Road Cookies, simply follow these steps:

1. Preheat Your Oven: Set your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Cream Butter and Sugars: In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
3. Add Eggs and Vanilla: Beat in the eggs, one at a time, along with the vanilla extract, mixing until well blended.
4. Combine Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.
5. Mix Dry and Wet Ingredients: Gradually add the dry mixture to the wet mixture, stirring until just combined.
6. Fold in Add-ins: Gently fold in the chocolate chips, mini marshmallows, and chopped nuts until evenly distributed throughout the batter.
7. Scoop the Dough: Using a cookie scoop or tablespoon, drop dough onto the prepared baking sheet, leaving space between each cookie.
8. Bake: Place the baking sheet in the preheated oven and bake for 10-12 minutes, or until the edges are set.
9. Cool: Remove from the oven and let the cookies cool on the sheet for about 5 minutes before transferring them to a wire rack to cool completely.
10. Enjoy: Once cooled, enjoy the cookies as a delicious treat, or package them to share with friends!