1-First, preheat your oven to 350°F and line a 9×9 inch pan with parchment paper for easy removal later. This sets the stage for baking without any sticking issues, so your bars come out clean and neat.

2-Next, in a saucepan, melt 1 cup of salted butter and 1.5 cups of semi-sweet chocolate chips over low heat until smooth and glossy. Keep stirring to avoid any lumps, creating a base that’s as creamy as your favorite hot chocolate.

3-Stir in 1 cup of granulated sugar, 1 tablespoon of hazelnut liqueur if you’re using it, and 2 teaspoons of vanilla extract to build those deep flavors. In a separate bowl, whisk 4 eggs for about a minute until they’re bubbly, then mix them into your chocolate blend for a light, airy texture.

4-Add 1/2 cup of flour, 1/2 cup of cocoa powder, 1 teaspoon of sea salt, and the remaining 0.5 cup of semi-sweet chocolate chips, stirring everything until just combined. Spread half of this batter into your prepared pan and bake for 20 minutes it’s the foundation of your bars.

5-Remove from the oven and switch to broil. Arrange 1-2 cups of marshmallows on top and broil for 1-3 minutes until they’re toasted just how you like, watching closely to get that perfect golden hue. Finally, spread the rest of the batter over the marshmallows, press in 2 ounces of chocolate chunks, and bake at 350°F for another 20 minutes until the top sets but stays a bit wiggly underneath.

6-Let the bars cool in the pan for 20 minutes, then lift them out with the parchment and cut into pieces. For a real treat, serve them warm for that gooey feel or let them cool fully for easier slicing. Essential Grilling Tips might not directly apply, but they show how simple techniques can elevate any recipe, just like this one.