The brownies start with melted butter and semisweet chocolate, then two sugars, eggs and vanilla, with only three quarters of a cup of flour and a little cocoa folded in.
Once the center is set, two cups of mini marshmallows go over the top for 3 minutes and then under the broiler just long enough to toast. There is no graham layer.
Ingredient Notes
- Semisweet chocolate
- Six ounces, melted with the butter.
- Mini marshmallows
- Two cups, scattered over the baked brownies.
How to Make It
Pan lined
Heat oven to 350°F and line an 8-inch square pan.
Chocolate melted
Melt unsalted butter and chopped semisweet chocolate together and cool slightly.
Sugars and eggs
Whisk in granulated sugar, packed brown sugar, large eggs, and vanilla extract.
Flour folded
Fold in all-purpose flour, unsweetened cocoa powder, and fine salt.
Baked
Bake 22 to 25 minutes, until the edges are set and a tester has moist crumbs.
Marshmallows toasted
Scatter mini marshmallows over the top and return to the oven for 3 minutes, then broil very briefly just until the marshmallows toast. Watch constantly.
Cooled
Cool before cutting.
Watching the Broiler
The last minute of the recipe.
How do the marshmallows look?
Pale and soft
Leave them a few seconds more.
They have not started to toast.
Golden on top
Take the pan out now.
This is the toasted look you want.
Browning at the edges fast
Pull the pan immediately.
Marshmallows go from toasted to burned very quickly.
Success Tips
- Line the pan with overhanging parchment to lift the slab out.
- Stay at the oven door during the broil; marshmallows scorch in seconds.
- Oil the knife between cuts so the marshmallow does not drag.
Why This Recipe Works
- Melted chocolate and a small amount of flour give the fudgy texture.
- Softening the marshmallows in the oven first helps them brown evenly.
- A very short broil toasts the tops without melting them flat.
- Cooling before cutting keeps the layers neat.
Storage and Reheating
Refrigerate
Store airtight at room temperature up to 2 days or refrigerate up to 4 days.
Serving Ideas
Cut into 16 squares and serve at room temperature.
Frequently Asked Questions
How long do the marshmallows go under the broiler?
Very briefly, just until toasted; watch them constantly.
Is there a graham cracker crust?
No, it is a brownie base with a marshmallow top.
