Chocolate Rice Krispie Treats Recipe

Bittersweet chocolate, unsweetened chocolate, and cocoa powder make these gooey, marshmallow-y bars extra special.

Overhead view of sliced chocolate rice krispie treats.

Serious Eats / Yvonne Ruperti

Shooting a cooking show series is a ton of work. For three straight weeks each May, the entire test kitchen at America's Test Kitchen shuts down, lights and cameras go up, and the kitchen staff focuses on the show. There are boat loads of food to be ordered, scripts to write, and the cooking of perfectly executed dishes timed right down to the minute (you do not want to hold the director up).

It's stressful indeed, but the crew makes sure they have a good time. One of the ways they let off steam is with a cold beer the annual "Rice Krispie Treat Cook Off". It inevitably becomes a very serious event for the iron chefs in the test kitchen (did someone say pride?), and challengers will trash talk and try to psych each other out. It's all in good fun though (I think), and I could think of worse ways to spend a day at work. On the last day of filming, there's Rice Krispies all over the floor as the kitchen is clogged with entrants concocting their recipe.

When the time is up, a giant table is overflowing with the 'masterpieces' to be judged before a champion is crowned. No flavor is out of bounds here, and I've tasted it all—from 'safe' submissions like lemon or caramel, to the likes of Rice Krispie 'sushi', pumpkin roll Rice Krispie treats, and even one with fish sauce (yup).

No, I never won. I never even entered the competition (I couldn't handle the intense pressure), but I always made sure I was at the tasting to scarf down a plateful of samples. How could anyone resist a Rice Krispie treat buffet? Talk about a sugar rush. Not surprisingly, my favorites were always the chocolate entries. While it's easy to take the chocolate idea and run with it (chocolate-banana, chocolate-bacon), I like it best when it's simply chocolate.

Traditional Krispie treats are cloyingly sweet, so when it came to adding chocolate to mine, I knew right off the bat that I had to go with unsweetened chocolate for the base. But not too much block chocolate. While I wouldn't accept anything less than deep deep chocolate flavor, I didn't want the Krispie treats to firm up too much once the melted chocolate had cooled and set up. So for extra chocolate flavor, I stir a few tablespoons of cocoa powder into the melted marshmallow mixture. Finally, to make them really chocolaty, chopped bittersweet chocolate is folded in at the very end. I couldn't resist one last touch: a sprinkle of sea salt over the top to kick your flavor buds into high gear and turn these morsels into crispy, chocolaty crack.

While I still adore the classic version of Rice Krispie treats, these hit the spot for that deep dark chocolate craving...or if you ever find yourself in a battle of Rice Krispies.

Recipe Details

Chocolate Rice Krispie Treats Recipe

Prep 5 mins
Cook 10 mins
Active 15 mins
Cooling Time 30 mins
Total 45 mins
Serves 9 servings
Keep Screen Awake

Ingredients

  • 6 tablespoons unsalted butter, plus extra for greasing pan

  • 1/8 teaspoon salt

  • 10 1/2 ounces (one bag, about 5 cups) marshmallows

  • 3 ounces unsweetened chocolate, finely chopped

  • 2 tablespoons cocoa powder

  • 1 teaspoon vanilla extract

  • 7 cups puffed rice cereal (like Rice Krispies)

  • 5 ounces bittersweet chocolate, finely chopped

  • 1/2 teaspoon sea salt

Directions

  1. Lightly grease an 8 by 8-inch or 9 by 9-inch square panpan with butter. In large saucepan over medium heat, melt butter. Add salt, marshmallows, unsweetened chocolate, and cocoa, and melt, stirring frequently. Stir in vanilla.

  2. Fold in puffed rice cereal until completely coated (see note). Fold in bittersweet chocolate (see note). Immediately spread into pan. Gently smooth top with spatula and sprinkle evenly with salt.

  3. Let sit until set, about 30 minutes. Cut into squares and serve.

Special Equipment

8 by 8-inch or 9 by 9-inch square pan

Notes

Lightly greasing a rubber spatula will help keep the mixture from sticking. When folding puffed rice cereal into mixture, stir gently so as not to crush the cereal too much.

When folding in the chopped bittersweet chocolate, some of the chocolate may melt into the mixture.

Nutrition Facts (per serving)
385 Calories
21g Fat
45g Carbs
5g Protein
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Nutrition Facts
Servings: 9
Amount per serving
Calories 385
% Daily Value*
Total Fat 21g 27%
Saturated Fat 13g 65%
Cholesterol 21mg 7%
Sodium 180mg 8%
Total Carbohydrate 45g 16%
Dietary Fiber 5g 17%
Total Sugars 19g
Protein 5g
Vitamin C 0mg 0%
Calcium 30mg 2%
Iron 8mg 46%
Potassium 226mg 5%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)