Mars Bar Marshmallow Slice Recipe

This decadent Mars Bar Marshmallow Slice recipe is quick, easy, and perfect for kids to make! Inspired by a popular TV show, this no-bake treat features a delicious combination of melted Mars bars (or Milky Ways!), fluffy marshmallows, and crispy rice bubbles. A simple yet impressive dessert that's perfect for parties or a sweet anytime snack. Plus, it freezes beautifully for later enjoyment!

Prep Time 15 mins
Cook Time 75 mins
Calories 67.9 kcal
Protein 1g
Rating Be the first
Mars Bar Marshmallow Slice 43

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Mars Bar Marshmallow Slice

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How to Make Mars Bar Marshmallow Slice

  1. Line a 20cm square cake tin with baking paper.
  2. Place 200g (7oz) Mars bars (or Milky Way bars) and 50g (1.75 oz) unsalted butter in a medium saucepan. Melt over low heat, stirring constantly until smooth and combined.
  3. In a large bowl, combine 6 cups (150g) Rice Bubbles cereal and 2 cups (200g) mini marshmallows.
  4. Quickly pour the melted chocolate mixture over the Rice Bubbles and marshmallows. Stir gently but thoroughly to coat, being careful not to overmix as the marshmallows will melt from the heat of the chocolate.
  5. Spread the mixture evenly into the prepared cake tin. Sprinkle with your favorite colored sprinkles.
  6. Refrigerate for at least 2 hours, or until completely set.
  7. Once set, cut into squares and serve. Enjoy!

Nutrition Information (Approximate per serving)

Sodium

1 g

Sugar

25g

Fat

6g

Carbs

3g

Frequently Asked Questions

How long does it take to make Mars Bar Marshmallow Slice?

Mars Bar Marshmallow Slice takes about 90 minutes from start to finish — roughly 15 minutes to prepare and 75 minutes to cook.

How many calories are in Mars Bar Marshmallow Slice?

Mars Bar Marshmallow Slice has approximately 67.9 calories per serving, with about 1 g protein, 3 g carbohydrates and 4 g fat.

What ingredients do I need for Mars Bar Marshmallow Slice?

The key ingredients for Mars Bar Marshmallow Slice are Mars Bars, Butter, Rice Bubbles, Mini Marshmallows, Candy Sprinkles. See the full list with measurements above.

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