Iced Rainbow Marshmallow Cereal Milk Latte

This rainbow marshmallow cereal latte is sweet, colorful, and nostalgic—made with cereal milk, espresso, and fluffy marshmallow cold foam.

Recipe and image compliments of Laura from Lolo’s Home Kitchen

Print Recipe

Iced Rainbow Marshmallow Cereal Milk Latte

Prep Time15

Infusion Time (min)1

Servings:

Ingredients

Cereal Milk

8 ounces Hiland Dairy Milk 1 cup
1 cup rainbow marshmallow cereal

Latte

1 –2 shots espresso or 8 ounces cold brew or regular coffee
Spoonful of marshmallow creme
Ice

Cold Foam

¾ cup Hiland Heavy Cream or Half & Half
½ cup rainbow marshmallows
1 teaspoon vanilla extract

Instructions

Cereal Milk: In a jar or glass, add the 1 cup of milk and 1 cup rainbow marshmallow cereal. Mix together until the cereal is coated, then seal with a lid or plastic wrap. Refrigerate for at least 1 hour or up to overnight.
Cold Foam: In a jar or glass, add the ¾ cup heavy cream or half & half and ½ cup rainbow marshmallows. Mix together until the marshmallows are coated, then seal with a lid or plastic wrap. Refrigerate for at least 1 hour or up to overnight.
Assemble the Latte: In a small glass, place a spoonful of marshmallow creme in the bottom. Brew 1–2 shots of espresso (or coffee of choice) over the marshmallow creme. Set aside to cool slightly.
Strain the Mixtures: Strain the milk and cereal mixture so only the flavored cereal milk remains. Do the same for the heavy cream mixture.
Build the Drink: Fill a glass with ice. Pour about ¼–½ cup of the cereal milk over the ice. Next, pour the espresso over the milk.
Make the Cold Foam: In a small glass, add ¼ cup of the marshmallow-infused heavy cream along with the 1 teaspoon vanilla extract. Use a handheld frother to mix until the cold foam becomes thick and frothy. A standard frother works as well.
Finish the Latte: Gently pour the cold foam over the latte. Top with extra rainbow marshmallows. Insert a straw, stir slightly, and enjoy.

Hiland Milk being poured over rainbow marshmallow cereal in a glass jar to make homemade cereal milk, with colorful cereal pieces visible throughout.

Green-tinted cereal milk being poured from a jar into a glass filled with ice, with rainbow marshmallow cereal visible in the background on a kitchen counter.

Espresso being poured over iced cereal milk in a glass, creating layered swirls of coffee and pale green milk with rainbow marshmallow cereal visible in the background.

Thick pale green marshmallow cold foam being poured over a layered iced cereal milk latte with espresso and ice in a glass, forming a creamy top layer.

A playful coffee treat perfect for St. Patrick’s Day or any fun morning

Rainbow marshmallow cereal soaked in Hiland Dairy Milk creates sweet cereal milk, topped with espresso and marshmallow cold foam for a fun, nostalgic drink.

If you love fun, festive drinks, this rainbow marshmallow cereal latte might become your new favorite treat. It tastes like a bowl of childhood cereal in latte form, with creamy cereal milk, bold espresso, and a dreamy marshmallow cold foam on top.

You’ll soak the rainbow marshmallow cereal in Hiland Dairy Milk to create homemade cereal milk, similar to the sweet milk left at the bottom of your cereal bowl. That flavorful milk becomes the base for the latte. On top sits a frothy cold foam made with the colorful marshmallow pieces from the cereal.

Why You’ll Love This Rainbow Marshmallow Cereal Latte

So fun for St. Patrick’s Day
Made with homemade cereal milk
Creamy marshmallow cold foam
Easy to customize
Ready in minutes once the cereal milk is prepared
If you’re looking for a festive coffee shop-style drink you can easily make at home, this one delivers.

What Is Cereal Milk?

Cereal milk is exactly what it sounds like: milk that has been infused with cereal flavor by soaking the cereal in it.

In this recipe, the rainbow marshmallow cereal is soaked in milk for at least one hour, or overnight for deeper flavor. The result is sweet, lightly vanilla-flavored milk with that classic cereal taste.
It’s nostalgic in the best way.

Ingredients You’ll Need

For the Cereal Milk

1 cup Hiland Dairy Milk
1 cup rainbow marshmallow cereal

For the Latte

1–2 shots espresso (or coffee of choice)
Spoonful marshmallow creme
Ice (if making iced lattes)

For the Marshmallow Cold Foam

¾ cup Hiland Dairy Heavy Cream or Half & Half
½ cup rainbow marshmallows
1 teaspoon vanilla extract or syrup
Extra rainbow marshmallows for topping

How to Make a Rainbow Marshmallow Cereal Latte

Step 1: Make the Cereal Milk

Add 1 cup rainbow marshmallow cereal to 1 cup Hiland Dairy Milk. Stir and let soak for at least 1 hour or up to overnight in the refrigerator.

Strain the cereal out using a fine mesh strainer, pressing gently to extract as much milk as possible.

Discard the soggy cereal and set the cereal milk aside.

Step 2: Make the Marshmallow Cold Foam

In a small glass or jar combine:
½ cup rainbow marshmallows
¾ cup Hiland Dairy Heavy Cream or Half & Half
1 teaspoon vanilla extract

Use a hand frother to whip until thick and fluffy. The foam should be creamy and pourable while still holding its shape.

Step 3: Assemble the Latte

Fill a glass with ice if making an iced latte.
Add:
about ½ cup cereal milk
1–2 shots espresso or coffee of choice
Stir gently.
Top with a generous layer of marshmallow cold foam.
Finish with extra rainbow marshmallows on top.
Serve immediately and enjoy.

Tips for the Best Rainbow Marshmallow Cereal Latte

Soak longer for stronger flavor. Overnight soaking gives the deepest cereal flavor.
Adjust espresso to taste. Two shots per latte is a nice balance, but you can use more or less depending on how strong you prefer your coffee.
Make it hot. Warm the cereal milk gently before adding espresso and foam.
Strain well. Use a fine mesh strainer so no soggy cereal pieces end up in your latte.

Frequently Asked Questions

How long should I soak the cereal?

At least 1 hour, but overnight produces the richest flavor.

Can I make this dairy-free?

Yes. Use your favorite dairy-free milk and a dairy-free cream alternative for the foam.

Can I prep anything ahead of time?

Absolutely. The cereal milk can be made the night before and stored in the refrigerator for up to 24 hours.

Close-up of a glass jar filled with smooth cottage cheese banana pudding topped with banana slices and crushed vanilla wafers, sitting on a wooden board with soft natural light.

Top view of a creamy cereal milk latte topped with pastel rainbow marshmallow cereal pieces in a glass, with extra cereal scattered on the table and a small jar of cereal nearby.

This colorful, creamy, and whimsical latte tastes like childhood in a cup!

Variations

Add a splash of Irish cream syrup for a fun St. Patrick’s Day twist.
Blend everything together for a frozen cereal latte.
Add whipped cream under the cold foam for extra indulgence.
Drizzle with white chocolate syrup for extra sweetness.

And if you’re interested in creating more deliciousness with Hiland Dairy products, be sure to check out Hiland Dairy’s recipes too (including some created by yours truly!).