You'll note that there's a carton of whole milk in that picture - but I actually forgot to add it to the recipe. They came out just fine! I think though, if you add the milk, the bars will come out less dense and chewy. I will post the full recipe below.
When making these, it's best to line the pan with aluminum foil, and then butter it. I had no problem removing them from the pan with the butter/foil method.
Then you mix the wet ingredients, add in the dry, and press into the buttered, foil lined pan
The mixture is very thick when you forget to add the milk, but it works!
Throw the pan into the oven and bake halfway. Take the pan out and then arrange marshmallows in rows. Put the pan back in the oven and bake a while longer. The marshmallows get big, puffy, and golden brown :
Once you take them out of the oven, they "calm down" and flatten. Let them cool in the pan, then cut and enjoy.
They look a bit like fried eggs, but let me assure you they taste really good :)
Serve warm - They can be stored for a few days - I recommend popping them in the microwave for 10-15 seconds to heat them back up.
2 cups graham cracker crumbs (make them yourself in a food processor, or get the Keebler ready made graham cracker crumbs)
1/4 cup all-purpose flour
1 1/2 tsp baking powder
1/4 tsp salt
1/2 cup unsalted butter (room temp) + butter to line the bottom of the pan
3 large eggs
2 tsp vanilla
3/4 cup whole milk (optional - use it if you want more cake like bars.. don't use it if you want chewy brownie like bars)
12-16 ounces semi sweet chocolate chunks (either buy the chunks or cut up some chocolate bars)
13 x 9 baking pan
Stand mixer or hand mixer
Preheat oven to 325 degrees.
Line bottom and sides of baking pan with aluminum foil and then coat it liberally with butter.
Put the graham cracker crumbs, flour, baking powder, and salt in a bowl and stir to combine.
In a large bowl, beat the butter and sugar (with hand mixer or stand mixer) until the mixture looks creamy. Add the eggs, one at a time, beating well after each addition. Add vanilla.
Add in half the crumb mixture and mix until blended.
Here is where you would add the milk if you are using it.
Mix in the remaining crumb mixture, and then stir in the chocolate pieces. Scoop batter into pan and spread it evenly.
Bake for 20 minutes, then remove the pan from the oven and arrange the marshmallows on top of the cake - three rows of 5 marshmallows.
Continue baking until the marshmallows are golden brown and puffed up - about 15 minutes.
Take the cake out of the oven and immediately loosen it from the sides using a small knife. Cool the cake, in the pan, on a wire rack. When ready to serve, just lift the foil out of the pan and cut it into slices.
Serve warm or microwave to reheat.