Creating delicious S’more Bars can be simple if you follow these steps carefully:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and prepare an 8×8-inch baking dish by greasing it lightly or lining it with parchment paper.

2. Prepare the Graham Cracker Mixture: In a large bowl, combine the graham cracker crumbs, melted butter, granulated sugar, and egg. Mix thoroughly until everything is well combined.

3. Add Vanilla and Baking Powder: Stir in the vanilla extract and baking powder into the graham cracker mixture until fully incorporated.

4. Add Half the Mixture to the Baking Dish: Press half of the graham cracker mixture firmly into the bottom of the prepared baking dish, creating an even layer.

5. Layer with Marshmallows and Chocolate Chips: Evenly sprinkle the mini marshmallows over the base layer, then add chocolate chips and optional milk chocolate pieces on top of the marshmallows.

6. Top with Remaining Mixture: Crumble the remaining graham cracker mixture over the marshmallows and chocolate layers, ensuring even coverage across the top.

7. Bake the Bars: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the top is lightly golden and the marshmallows are nice and gooey.

8. Cool the Bars: Once baked, remove the dish from the oven and let it cool at room temperature for about 20 minutes.

9. Slice and Serve: After cooling, cut the bars into squares using a sharp knife. Serve immediately or store in an airtight container for later enjoyment.

By following these steps, you’ll create S’more Bars that are both delicious and satisfyingly chewy!