Creating S’mores Brownies with a Graham Cracker Crust will be a breeze if you follow these clear steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. Make the Graham Cracker Crust: In a medium bowl, combine graham cracker crumbs, melted butter, and sugar. Mix well and press it evenly into the bottom of the prepared baking pan.
3. Prepare the Brownie Batter: In a large bowl, combine the melted butter and sugar. Mix well until light and fluffy.
4. Add Eggs and Vanilla: Add eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
5. Mix Dry Ingredients: In another bowl, sift together flour, cocoa powder, salt, and baking powder. Gradually add the dry ingredients into the wet mixture, stirring until just combined.
6. Layer the Brownie Batter: Pour the brownie batter over the graham cracker crust, spreading it evenly.
7. Bake the Brownies: Bake in the preheated oven for 30-35 minutes or until a toothpick inserted in the center comes out mostly clean.
8. Add Toppings: Remove from the oven, sprinkle chocolate chips over the top, and then add mini marshmallows. Return to the oven for an additional 5 minutes, until the marshmallows puff up.
9. Cool the Brownies: Let the brownies cool in the pan for 15-20 minutes before slicing into squares.

By following these steps, you’ll have a batch of S’mores Brownies with a Graham Cracker Crust that are both visually appealing and mouth-wateringly delicious.