No-Bake Marshmallow Slice

Looking for a sweet treat that’s easy to make, requires no baking, and is irresistibly chewy and gooey? Say hello to the No-Bake Marshmallow Slice! This delightful dessert is a perfect combination of soft marshmallows, crunchy biscuit pieces, and a rich, buttery base. It’s a classic, nostalgic treat that brings back childhood memories of fun, color, and sweetness in every bite.

This recipe is ideal for busy days, potlucks, kids’ parties, or whenever you’re craving something sweet but don’t want to turn on the oven. It’s as simple as melting, mixing, and chilling, making it perfect even for beginner bakers. Plus, you can customize it with your favorite mix-ins, from chocolate chips to nuts.

Why You’ll Love No-Bake Marshmallow Slice

  • Super Easy to Make – No oven required!

  • Soft, Chewy, and Crunchy – A fun texture combo in every bite.

  • Great for Kids and Adults – A treat the whole family will enjoy.

  • Customizable – Add nuts, dried fruit, or sprinkles for a fun twist.

  • Perfect for Parties and Gifts – Easy to slice, serve, and share.

Preparation Time and Yield

  • Prep Time: 15 minutes

  • Chill Time: 2 hours

  • Total Time: 2 hours 15 minutes

  • Yield: 16 slices

Nutritional Information (Per Serving)

  • Calories: 180

  • Carbohydrates: 25g

  • Protein: 2g

  • Fat: 8g

  • Fiber: 1g

  • Sugar: 16g

Ingredients for No-Bake Marshmallow Slice

For the Base:

  • 2 cups crushed digestive biscuits (or graham crackers)

  • ½ cup unsalted butter (melted)

  • ¼ cup honey or golden syrup

  • ½ cup sweetened condensed milk

For the Marshmallow Layer:

  • 2 cups mini marshmallows (or large marshmallows chopped)

  • ½ cup white chocolate chips (optional, for extra sweetness)

  • ½ cup shredded coconut (optional, for texture)

  • ¼ cup colorful sprinkles (optional, for fun decoration)

Step-by-Step Instructions for No-Bake Marshmallow Slice

Step 1: Prepare the Base

  1. In a large bowl, mix the crushed biscuits, melted butter, honey (or golden syrup), and condensed milk until well combined.

  2. Press the mixture firmly into a lined 8×8-inch baking dish. Use a spatula or the back of a spoon to smooth it out evenly.

  3. Place the dish in the refrigerator while preparing the marshmallow layer.

Step 2: Prepare the Marshmallow Mixture

  1. In a microwave-safe bowl, melt the white chocolate chips in 30-second intervals, stirring between each until smooth.

  2. Stir in the mini marshmallows, shredded coconut, and sprinkles until everything is well combined.

Step 3: Assemble and Chill

  1. Spread the marshmallow mixture evenly over the biscuit base.

  2. Press down gently to ensure everything sticks together.

  3. Refrigerate for at least 2 hours until firm.

Step 4: Slice and Serve

  1. Once set, remove from the fridge and cut into 16 squares.

  2. Serve chilled and enjoy!

Ingredient Background

A great No-Bake Marshmallow Slice depends on a few key ingredients that bring flavor, texture, and structure to the dessert. From the buttery biscuit base to the soft and chewy marshmallow topping, each component plays an important role.

1. Marshmallows – The Soft, Chewy Star

Marshmallows are the main attraction in this dessert. Their light, airy, and bouncy texture makes every bite melt in your mouth.

  • Mini marshmallows are ideal because they melt quickly and distribute evenly.

  • Large marshmallows can be used but should be chopped into smaller pieces.

  • For a fun twist, try flavored marshmallows like strawberry or coconut.

2. Biscuits – The Crunchy Foundation

The biscuit base adds structure and crunch to balance the soft marshmallows. Digestive biscuits, graham crackers, or shortbread cookies work best.

  • Digestive biscuits create a rich, slightly sweet flavor.

  • Graham crackers add a mild honey taste.

  • Shortbread cookies give a buttery, melt-in-your-mouth base.

3. Condensed Milk – The Sweet Binding Agent

Sweetened condensed milk acts as the glue, holding the base together while adding a creamy, caramel-like sweetness. It also keeps the slice soft instead of dry.

Technique Tips for No-Bake Marshmallow Slice

1. Achieving the Perfect Base Texture

For a firm but not too hard base:

  • Crush biscuits finely to create an even, compact layer.

  • Press firmly into the pan using a spatula or the bottom of a cup.

  • Chill for at least 30 minutes before adding the marshmallow layer.

2. Melting the Marshmallows Properly

Melting marshmallows too fast can cause them to become too sticky and hard to spread. To avoid this:

  • Use low heat or microwave in short bursts (30 seconds at a time).

  • Stir frequently to prevent clumping.

  • If too thick, add a tablespoon of butter to smooth the mixture.

3. Cutting Clean, Even Slices

  • Chill for at least 2 hours before slicing to set the layers properly.

  • Use a sharp knife dipped in hot water for clean cuts.

  • Wipe the knife between slices to prevent sticking.

Alternative Presentation Ideas

1. Chocolate-Dipped Marshmallow Slices

For a chocolatey twist, dip each slice halfway into melted dark chocolate and let it set before serving. This adds a decadent touch.

2. Rainbow Marshmallow Bars

Use different colored marshmallows to create a fun, layered rainbow effect. Kids love this version at birthday parties!

3. Nutty Crunch Variation

Add chopped almonds, walnuts, or hazelnuts to the base or sprinkle on top for an added crunch.

Freezing and Storing No-Bake Marshmallow Slice

1. Storing in the Refrigerator

  • Store in an airtight container to keep the slices fresh.

  • Keeps well in the fridge for up to 5 days.

2. Freezing for Longer Storage

  • Wrap each slice in parchment paper and store in a zip-lock bag.

  • Freezes well for up to 2 months.

  • Thaw at room temperature for 15 minutes before eating.

3. Preventing the Base from Getting Too Hard

  • If the base becomes too firm after chilling, let it sit at room temperature for 10 minutes before slicing.

  • Use a serrated knife for easy cutting.

Healthier Twist Ideas

1. Swap Butter for Nut Butter

For a healthier base, use peanut butter, almond butter, or cashew butter instead of regular butter. This adds protein and a nutty flavor.

2. Use Dark Chocolate Instead of White Chocolate

Dark chocolate has less sugar and more antioxidants, making it a healthier topping.

3. Reduce the Sweetness

  • Use unsweetened coconut flakes instead of sweetened.

  • Replace some of the condensed milk with Greek yogurt for a lighter texture.

Serving Suggestions for Events

1. Kid’s Birthday Party Treat

Cut the slices into fun shapes using cookie cutters. Star, heart, and animal shapes are always a hit with kids!

2. Holiday Dessert Platter

Arrange the slices on a festive tray with chocolate truffles, cookies, and fresh fruit for a colorful dessert spread.

3. Easy Dessert for Picnics and BBQs

Pack these slices in an airtight container for a no-mess, handheld treat perfect for outdoor gatherings.

Frequently Asked Questions (FAQs)

1. Can I make No-Bake Marshmallow Slice without condensed milk?

Yes! You can use melted white chocolate mixed with a little milk as a substitute.

2. Why did my marshmallows melt too much?

If the marshmallows became runny, they were likely heated too long. Next time, use low heat and stir frequently.

3. Can I use chocolate marshmallows?

Absolutely! Chocolate marshmallows add a rich cocoa flavor.

4. How do I prevent the base from crumbling?

Make sure to press the base down firmly and use enough melted butter to bind the crumbs together.

5. Can I make this dairy-free?

Yes! Use dairy-free butter, coconut condensed milk, and vegan marshmallows.

6. How long does this last at room temperature?

It’s best kept chilled, but it can sit out for up to 2 hours in a cool place.

7. What mix-ins can I add?

Try chopped nuts, dried fruit, sprinkles, or chocolate chips for variety.

8. Can I use regular-sized marshmallows?

Yes! Just chop them into smaller pieces so they mix in evenly.

9. Why is my marshmallow layer sticky?

This is normal! To reduce stickiness, chill longer and dust lightly with cornstarch.

10. Can I make this in advance?

Yes! No-Bake Marshmallow Slice can be made 2 days ahead and stored in the fridge.

Conclusion

No-Bake Marshmallow Slice is a fun, easy, and crowd-pleasing dessert that brings together sweet, chewy marshmallows and a crunchy biscuit base. With its no-fuss preparation and endless customization options, it’s a perfect treat for any occasion.

Whether you’re making it for a kids’ party, a holiday gathering, or just for yourself, this slice is always a hit. Plus, with fun variations like chocolate drizzles, rainbow marshmallows, or nutty crunch, you can get creative with every batch!

The best part? No baking required, no complicated steps, just pure deliciousness. So go ahead—whip up a batch, chill it, and enjoy every chewy, crunchy, and gooey bite!

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No-Bake Marshmallow Slice


  • Author: Luna
  • Total Time: 2 hours 15 minutes
  • Yield: 16 slices 1x

Ingredients

Scale

For the Base:

  • 2 cups crushed digestive biscuits (or graham crackers)
  • ½ cup unsalted butter (melted)
  • ¼ cup honey or golden syrup
  • ½ cup sweetened condensed milk

For the Marshmallow Layer:

  • 2 cups mini marshmallows (or large marshmallows chopped)
  • ½ cup white chocolate chips (optional, for extra sweetness)
  • ½ cup shredded coconut (optional, for texture)
  • ¼ cup colorful sprinkles (optional, for fun decoration)

Instructions

Step 1: Prepare the Base

  1. In a large bowl, mix the crushed biscuits, melted butter, honey (or golden syrup), and condensed milk until well combined.

  2. Press the mixture firmly into a lined 8×8-inch baking dish. Use a spatula or the back of a spoon to smooth it out evenly.

  3. Place the dish in the refrigerator while preparing the marshmallow layer.

Step 2: Prepare the Marshmallow Mixture

  1. In a microwave-safe bowl, melt the white chocolate chips in 30-second intervals, stirring between each until smooth.

  2. Stir in the mini marshmallows, shredded coconut, and sprinkles until everything is well combined.

Step 3: Assemble and Chill

  1. Spread the marshmallow mixture evenly over the biscuit base.

  2. Press down gently to ensure everything sticks together.

  3. Refrigerate for at least 2 hours until firm.

Step 4: Slice and Serve

  1. Once set, remove from the fridge and cut into 16 squares.

  2. Serve chilled and enjoy!

  • Prep Time: 15 minutes
  • Chill Time: 2 hours

Nutrition

  • Calories: 180
  • Sugar: 16g
  • Fat: 8g
  • Carbohydrates: 25g
  • Fiber: 1g
  • Protein: 2g

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