Marshmallow Krispie Bars

Prep: 15 min Cook: 20 min Serves: 24 Cuisine: American

Marshmallow Krispie Bars combine rich fudge brownies with a gooey marshmallow layer and a crunchy chocolate peanut butter topping. Perfect for parties, potlucks, or a sweet treat anytime, they offer a delightful mix of textures and flavors loved by kids and adults alike. Easy to customize for various occasions.

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Ingredients

  • 1 pkg. Duncan Hines fudge brownie mix (family size)
  • 1 (10 to 12 oz.) pkg. miniature marshmallows
  • 1 1/2 cups semi-sweet chocolate chips
  • 1 cup creamy peanut butter
  • 1 tablespoon butter or margarine
  • 1 1/2 cups Rice Krispies cereal

Instructions

  1. Preheat oven to 350°F.
  2. Grease the bottom of a 13 x 9-inch pan. Prepare brownies following package directions for the original recipe. Remove from oven.
  3. Sprinkle miniature marshmallows over hot brownies.
  4. Return to the oven and bake for 3 minutes longer.
  5. Combine semi-sweet chocolate chips, creamy peanut butter, and butter in a medium saucepan.
  6. Cook on low heat, stirring constantly, until the chocolate chips are melted and mixture is smooth.
  7. Add Rice Krispies cereal and mix well.
  8. Spread the chocolate peanut butter mixture over the marshmallow layer in the pan.
  9. Refrigerate until chilled. Cut into bars and serve.

Tips & Substitutions

For best results, slightly underbake the brownies to maintain a fudgy texture. If you prefer a different flavor, consider using white chocolate chips or almond butter instead of peanut butter. You can also substitute the Rice Krispies with another crunchy cereal for a unique twist. Make sure to stir the chocolate mixture continuously to prevent burning.

Serving Suggestions

These Marshmallow Krispie Bars are delightful on their own but can be paired with a scoop of vanilla ice cream for an extra treat. They also make a great addition to a dessert spread alongside other sweet treats like Finger Cheesewiches or Scrumptious Ice Cream Torte. Serve them at parties or family gatherings for a fun and nostalgic dessert experience.

Storage & Reheating

Store any leftover bars in an airtight container at room temperature for up to three days. If you want to keep them longer, refrigerate for up to a week. To enjoy them warm, simply microwave a bar for a few seconds until the chocolate softens and the marshmallows are gooey again.

Nutrition & Diet Analysis (per serving)

Each serving of Marshmallow Krispie Bars contains roughly 282 calories, with 4g protein, 15g carbohydrates, and 24g fat.

282 kcal 14% DV
Protein Fat Carbs

Macronutrients

Protein 4.2g 8% DV
Total Fat 23.5g 30% DV
Carbs 14.8g 5% DV
Fiber 1.4g 5% DV
Sugar 4.7g 9% DV

Electrolytes

Sodium 130.2mg 6% DV
Potassium 124.3mg 3% DV
Cholesterol 45mg 15% DV

Vitamins & Minerals

Vitamin A 47.8mcg 5% DV
Vitamin C 0.8mg 1% DV
Vitamin D 0.2mcg 1% DV
Calcium 20.9mg 2% DV
Iron 1.1mg 6% DV
Diet fit Low-carb Under 400 cal
Contains Milk Peanut

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use a different brownie mix for this recipe?

Yes, you can use any brand of brownie mix you prefer, as long as it is a similar family size. Just follow the package instructions for baking time and temperature to ensure the brownies turn out perfectly.

How can I make these bars gluten-free?

To make these Marshmallow Krispie Bars gluten-free, simply use a gluten-free brownie mix. Additionally, ensure that the Rice Krispies you choose are labeled gluten-free, as some brands may contain gluten.

What should I do if I don't have miniature marshmallows?

If you don’t have miniature marshmallows, you can cut regular marshmallows into smaller pieces to use instead. Alternatively, you can also use a marshmallow fluff spread, but you might need to adjust the layering slightly to accommodate the different texture.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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