Creating S’more Bars is straightforward when you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking dish.
2. Make the Crust: In a bowl, mix graham cracker crumbs, granulated sugar, melted butter, and vanilla extract. Stir until combined.
3. Press the Mixture: Evenly press the crumb mixture into the bottom of the prepared baking dish.
4. Bake the Crust: Place the dish in the oven and bake for 10 minutes, until lightly golden.
5. Add Chocolate Chips: Remove the dish from the oven and immediately sprinkle the semi-sweet chocolate chips over the crust.
6. Layer on Marshmallows: Evenly distribute mini marshmallows on top of the chocolate layer.
7. Bake Again: Return the dish to the oven and bake for an additional 15-20 minutes, or until the marshmallows are golden and bubbly.
8. Cool the Bars: Remove from the oven and let the bars cool for about 10 minutes in the pan.
9. Cut into Squares: Use a sharp knife to cut into squares once cooled. For best results, let the bars cool completely for easier cutting.
10. Serve and Enjoy: These bars can be enjoyed warm or at room temperature.

Follow these steps carefully, and you’ll end up with scrumptious S’more Bars that are sure to delight!