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    StandardRecipe

    Marshmallow Cookie Butter Latte

    The BYOB Team5 min1 drink (from a batch each of Toasted Marshmallow Syrup and Cookie Butter Syrup)$0.95/drink216 cal/drink

    Uses Toasted Marshmallow Syrup — make a batch ahead of time; it keeps in the fridge for a week or two, so you won't need to make it again for every drink.

    Ingredients & steps

    Standard

    Written hot. Switch to see the iced version's ingredients and steps.

    Ingredients

    • 2oz espresso (or 1/3 cup strong coffee/moka pot equivalent)
    • 8oz milk, steamed or frothed
    • 1 tbsp Toasted Marshmallow Syrup (make a batch ahead of time -- it keeps about 1 week in the fridge)
    • 1 tbsp Cookie Butter Syrup (make a batch ahead of time -- it keeps about 2 weeks)

    Steps

    1. 1.Make a batch each of Toasted Marshmallow Syrup and Cookie Butter Syrup ahead of time if you haven't already.
    2. 2.Pull a double shot of espresso (or brew strong coffee) directly into your serving cup.
    3. 3.Stir in 1 tbsp of the toasted marshmallow syrup and 1 tbsp of the cookie butter syrup while the espresso is still hot, until both are fully combined.
    4. 4.Steam or froth 8oz of milk to about 150°F and pour over the espresso mixture.
    5. 5.Serve immediately, with crumbled cookie butter cookies on top if you like.

    Swap the milk

    This recipe is written with Kirkland Signature Organic A2 Whole Milk (8oz). Pick a different milk to see the cost and calories update below.

    Milk: Kirkland Signature Organic A2 Whole Milk

    Cost per drink

    $0.95

    Calories per drink

    216

    Not medical or nutrition advice. Calorie figures on this page are estimates based on typical ingredient values, not a lab analysis of your exact batch — they'll shift with the brand of milk, syrup, or protein powder you actually use. "Ingredient-Honest" and "sugar-free" describe what's in the recipe, not a health claim. If you're managing diabetes, a caffeine sensitivity, pregnancy, or another condition, check with a doctor or dietitian before making a recipe part of your routine. Read the full disclaimer.

    This is a real, specific recipe, not a guess — a social-recipe post gives exact ingredients for a “toasted marshmallow cookie butter iced coffee”: cold water, espresso powder, ice, milk, Lotus Biscoff cookie butter, and Jet-Puffed marshmallow creme, stirred together. This version combines this site’s own Toasted Marshmallow Syrup and Cookie Butter Syrup.

    Two Real Bases, Not a New Fused Syrup

    This drink combines two syrups this site already has: 1 tbsp Toasted Marshmallow Syrup and 1 tbsp Cookie Butter Syrup, split evenly, instead of stirring in cookie butter spread and marshmallow creme directly the way the source recipe does. No new syrup needed.

    Building the Latte

    1. Pull a double shot of espresso (about 2oz) directly into your cup, or brew a strong coffee/moka pot equivalent.
    2. Stir in 1 tbsp Toasted Marshmallow Syrup and 1 tbsp Cookie Butter Syrup while the espresso is still hot.
    3. Steam or froth 8oz of milk to about 150°F and pour it over the espresso mixture.
    Chain Flavored Latte vs. Home Version
    Chain-size flavored latte (tax included)~$6.50
    Home marshmallow cookie butter latte (espresso, milk, both bases)~$0.95
    Savings per drink$5.55

    Assumptions: grande-size flavored latte, chain pricing, dairy milk, $16/lb specialty beans or equivalent grocery beans. At 5 drinks a week over the site’s standard 48-week year, that’s roughly $1,332/year back in your pocket.

    Swaps & Notes

    Recipe Card Summary

    Marshmallow Cookie Butter Latte

    • 2oz espresso + 8oz steamed milk + 1 tbsp Toasted Marshmallow Syrup + 1 tbsp Cookie Butter Syrup (both made ahead)
    • Prep time: 5 minutes (after both bases are made) · Total: 5 minutes
    • Cost: ~$0.95/drink vs. ~$6.50 chain equivalent

    FAQ

    Is this a real pairing, or did you invent it?

    Real — a specific social recipe (cold water, espresso powder, Biscoff cookie butter, and marshmallow creme) already combines these two flavors over iced espresso.

    How is this different from your Caramel Marshmallow Latte?

    That drink pairs Toasted Marshmallow Syrup with Caramel instead; this one pairs it with Cookie Butter — a spicier, more cookie-forward direction.

    Can I use the sugar-free versions of either base?

    Yes — swap in Sugar-Free Toasted Marshmallow Syrup and/or Sugar-Free Cookie Butter Syrup 1:1; the ratios don’t change.

    Keep exploring

    Browse by ingredient tier

    Or skip this drink and explore every recipe in the Ingredient-Honest, Standard, or Sugar-Free lineup.

    Browse more Latte recipes →