Ingredients

  • 2-1/4 cups Sugar
  • 1-1/4 cup Cocoa Powder (Dutch Process)
  • 1 teaspoon Baking Powder
  • 1 Tablespoon Vanilla Extract
  • 2 cups Chocolate Chips
  • 1-1/2 cup Flour, All Purpose
  • 1 jar (7.5 Oz. Jar) Marshmallow Fluff
  • 1 package (about 12 Oz. Package) Cinnamon Graham Crackers
  • 1 package (10 Oz. Package) Jet Puffed Marshmallows
  • 4 whole Eggs
  • 1 cup Butter (salted)
  • 1/2 teaspoons Salt (optional, Add If You Are Using Unsalted Butter)

Method

  • Preheat the oven to 350°F. Grease a 9 x 13-inch pan. (The pan I use is slightly larger, it was a large sheet cake pan, more like 10 x 14, but a 9x13 casserole dish will work for this too)
  • Melt the butter in a saucepan over medium high heat. Once it is melted add the sugar stirring it until it is hot and shiny looking but not bubbling. You want the sugar to dissolve a bit.
  • Remove from heat and add the cocoa, salt (if using), baking powder and vanilla. Transfer the mixture to a mixing bowl and add the eggs. Beat it until smooth and then add the flour. Once flour is just combined stir in the chips.
  • Spoon half the batter into the prepared pan and make sure it covers the whole bottom.
  • Now take large dollops of the fluff and swirl it onto the batter, you don't want to mix it fully, just give it a marbled look. (I used about half a jar of fluff in this step; you could do less if so inclined)
  • Take whole graham crackers and lay them on top of the fluff/brownie batter covering it completely.
  • Spread the other half of the jar of fluff over the top of the graham crackers. (again you could use less, but why would you??)
  • Spread the remaining half of the brownie batter on top of the fluff covered graham crackers.
  • Place Large Marshmallows about 1/4 inch apart on top of the whole pan. Basically you're looking for each marshmallow to be one brownie when you're finished so space them accordingly. In my larger pan I got 5x7 marshmallows, or 35 brownies, if you use a glass 9x13 casserole dish you may be closer to 4x6...
  • Bake the brownies on the middle rack of your preheated oven for 30 to 35 minutes, until a cake tester inserted into the center comes out clean.
  • Start testing them around the 30 minute mark. I usually look to see if the sides are getting a bit hard and crusty and make sure the middle looks set.
  • I am addicted to undercooked brownies, but these are so gooey that you don't want to under cook on purpose (like I tend to do). The marshmallows will be nice and puffed and toasted. Cool completely before cutting and serving.