Step-by-Step Guide: How to Bake Them
Preheat your oven to 350°F (175°C) and line an 8×8-inch square baking pan with parchment paper, leaving a little overhang on the sides for easy removal later.
1. Whisk the Wet Ingredients
In a medium bowl, vigorously whisk together the melted butter and the two eggs until the mixture is fully combined, smooth, and slightly pale.
2. Fold in the Dry Ingredients
Pour the hot chocolate mix and the all-purpose flour directly into the wet ingredients. Switch to a rubber spatula and gently fold the mixture together. Mix just until the dry pockets of flour disappear—overmixing the batter can introduce too much air and make the brownies tough.
3. Bake to Perfection
Spread the thick, glossy chocolate batter evenly into your prepared baking pan. Bake at 350°F for 20 to 22 minutes. When done, the edges should look set, but the center should still have a very slight, soft jiggle.
4. The Marshmallow Blanket
Remove the pan from the oven and immediately scatter the mini marshmallows generously across the hot brownies. Switch your oven to the Broil setting. Pop the pan back into the oven for 1 to 2 minutes—keep a very close eye on it! Remove the pan the exact second the marshmallows puff up and turn a beautiful, toasted golden-brown color.
+--------------------------------------------------------------------------+
| HOT CHOCOLATE BROWNIE TIMELINE |
+------------------------------------+-------------------------------------+
| INITIAL BAKE | MARSHMALLOW BROIL |
+------------------------------------+-------------------------------------+
| 20–22 Minutes | 1–2 Minutes |
| (Bake until edges are set) | (Watch closely until golden!) |
+------------------------------------+-------------------------------------+
Pro-Tips for Slicing and Serving
Because these brownies are incredibly fudgy and topped with gooey marshmallows, slicing them right away can get a bit messy. For clean, picture-perfect squares, let the brownies cool in the pan for at least 20 to 30 minutes. Once cooled, use the parchment paper overhang to lift the entire block out onto a cutting board. Run a sharp chef’s knife under hot water, wipe it dry, and make your cuts, cleaning the blade between each slice.
To make this dessert even more decadent, serve a warm square in a shallow mug or bowl topped with a scoop of vanilla bean ice cream and a tiny dusting of extra hot cocoa powder. It is an unforgettable chocolate experience that brings all the cozy vibes of winter straight to your dessert plate!
