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    StandardRecipe

    Peanut Butter Cup Mocha

    The BYOB Team5 min1 drink (from a batch of Mocha Sauce that makes about 12 servings)$1.06/drink235 cal/drink

    Uses Mocha Sauce — 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

    Ingredients

    • 2oz espresso (or 1/3 cup strong coffee/moka pot equivalent)
    • 8oz milk
    • 2 tbsp Mocha Sauce (make a batch ahead of time -- it keeps about 2 weeks in the fridge)
    • 1 tbsp powdered peanut butter (e.g. PB2), whisked into the milk

    Steps

    1. 1.Whisk the powdered peanut butter into the cold milk until fully smooth, before any heat is involved.
    2. 2.Pull a double shot of espresso (about 2oz) directly into your serving cup.
    3. 3.Stir 2 tbsp of Mocha Sauce into the hot espresso until fully combined.
    4. 4.Steam or froth the peanut-butter-milk mixture to about 150°F and pour it over the espresso-sauce mixture.
    5. 5.Serve immediately.

    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

    $1.06

    Calories per drink

    235

    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.

    Contains peanuts. This recipe uses real powdered peanut butter — skip it for anyone with a peanut allergy, and see the swap note below for a peanut-free version of the same base drink.

    This is the chocolate-and-peanut-butter classic built on our own Mocha Sauce plus real powdered peanut butter, not a “peanut butter flavored” syrup. It’s a lighter-protein sibling of our Chocolate Peanut Butter Protein Mocha — same peanut butter sourcing, no whey scoop, for anyone who wants the flavor without stacking a protein boost on top.

    Why Powdered, Not Regular, Peanut Butter

    Regular peanut butter is mostly fat by calorie — a tablespoon runs about 95-100 calories, most of it fat, with only about 4g of protein. Powdered peanut butter (the defatted, PB2-style kind) strips most of that fat out in processing, leaving a tablespoon at around 23 calories — a meaningfully lighter add to a drink that already has milk and a cocoa sauce in it. It also dissolves into milk more easily than a spoonful of the sticky regular jar version.

    Make the Sauce First (Just Once)

    This recipe assumes you already have a jar of Mocha Sauce in the fridge — cocoa and sugar simmered into a pourable sauce, keeping about 2 weeks.

    Building the Mocha

    1. Whisk 1 tbsp powdered peanut butter into 8oz of cold milk until completely smooth.
    2. Pull a double shot of espresso into your cup and stir in 2 tbsp Mocha Sauce while it’s hot.
    3. Steam or froth the peanut-butter-milk mixture and pour it over the espresso-sauce mix.
    Café Peanut Butter Cup Mocha vs. Home Version
    Café-style peanut butter cup mocha (grande)~$6.95
    Home peanut butter cup mocha (espresso, milk, sauce, PB powder)~$1.06
    Savings per drink$5.89

    The sauce batch itself is a one-time ~$1.30 and makes about 12 drinks. Assumptions: grande-size drink, national-average café pricing for a specialty flavor-combo mocha, dairy milk, $16/lb specialty beans or equivalent grocery beans, powdered peanut butter at ~$0.13/tbsp (see the frontmatter comment for the full jar-pricing math, same sourcing as our Chocolate Peanut Butter Protein Mocha). At 5 peanut butter cup mochas a week over the site’s standard 48-week year, that’s roughly $1,414/year back in your pocket versus the café version.

    Swaps & Notes

    • Nut/peanut allergy? Skip the peanut butter powder entirely and this becomes our regular Mocha — the sauce carries the drink fine on its own, no substitution needed.
    • No powdered peanut butter on hand? Regular peanut butter works, but whisk it into the hot espresso first (it dissolves better warm) rather than the cold milk — expect roughly 75 more calories and a slightly thicker texture.
    • Want more protein with this same flavor? See our Chocolate Peanut Butter Protein Mocha, which adds a whey scoop on top of this same peanut-butter-and-mocha base.
    • Want the blended version? See our Peanut Butter Cup Frappé — same flavor, blended, same allergen note.

    Recipe Card Summary

    Peanut Butter Cup Mocha

    • 2oz espresso + 8oz milk (peanut butter powder whisked in) + 2 tbsp Mocha Sauce (made ahead)
    • Prep time: 5 minutes (after the sauce is made) · Total: 5 minutes
    • Cost: ~$1.06/drink vs. ~$6.95 café equivalent
    • Contains peanuts

    FAQ

    Does this drink actually contain peanuts?

    Yes — the powdered peanut butter is a real peanut product, not a peanut-flavored substitute. Treat this exactly as you would any peanut-containing food for allergy purposes; skip it (see the swap note above) if peanuts are a concern for anyone drinking it.

    How is this different from your Chocolate Peanut Butter Protein Mocha?

    That recipe adds a full scoop of whey protein on top of this same peanut-butter-and-mocha-sauce base, aimed at a higher-protein result (~35g total). This page skips the whey scoop for anyone who wants the flavor without the protein boost or the extra cost/calories that come with it.

    Can I use real peanut butter instead of the powdered kind?

    Yes — whisk it into the hot espresso rather than the cold milk, since it dissolves better warm. Expect a thicker texture and roughly 75 more calories per drink than the powdered version above.

    Browse by ingredient tier

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

    Browse more Mocha recipes →