Starbucks Secret Menu: Peanut Butter Cup Frappuccino (Ingredients, Calories, Taste, Copycat Recipe, Caffeine & More information)

This article aims to give you more information on the Starbucks Peanut Butter Cup Frappuccino, how you can get it at your local Starbucks, and how to make it at home.

I am a fan of the drinks on the Starbucks secret menu. One of my favorites, I discovered, is the Peanut Butter Cup Frappuccino. I wondered where this drink had been all along, and I still order it when I want to give myself a treat. I will delve into it in this article, talk about how you can get it, and how to make it at home to enjoy at any time of the year, so read on.

A brief history of the drink

Since this is a secret menu drink, it does not have a definite history. All secret menu drinks are just a new combination of add-ins and syrups, resulting in a modification of the original beverage, and the same applies here. It is also unclear when the Peanut Butter Cup frappuccino first appeared as a Secret Menu option, and the barista or customer who created it is also unknown.

Starbucks Peanut Butter Cup Frappuccino Overview

What’s in a Starbucks Peanut Butter Cup frappuccino? (Ingredients)

Like other “secret” drinks, the formula for this frappuccino is a base drink with additional or substituted ingredients. Unlike most secret menu frappuccinos, the Peanut Butter Cup frappuccino is easy to order, only consisting of a mocha frappuccino, the fan-favorite syrup toffee nut, and any extra toppings that you can add or leave out.

Mocha Frappuccino is the base for this drink, combining the power of chocolate and coffee flavors. In most cases, it contains whole milk to give it its signature thickness. It contains ice, Starbucks blended espresso, whole milk, and mocha sauce.

The second ingredient is toffee nut syrup. This unique-tasting addition gives its drinks and snacks a toasty, slightly sweet flavor. Because Starbucks does not have peanut butter, toffee nut syrup is the closest-tasting alternative that the barista will add to create this secret menu drink.

Soy milk is the third ingredient and acts as a substitute for the whole milk that mocha frappuccino usually has, and it is a good source of plant-based proteins. You can add optional ingredients: whipped cream or mocha drizzle.

Starbucks Peanut Butter Cup Frappuccino: Sizes, Nutrition, Caffeine, & Calories

Starbucks Secret Menu: Peanut Butter Cup Frappuccino

What sizes are available?

The drink is available in Tall (12 fl. ounces), Grande (16 fl. ounces), and Venti (24 fl. ounces). Similar to the usual menu, the number of toffee syrup pumps will depend on the size you order – by default, the barista will put 2 syrup pumps in the Tall, the Grande will have 3 pumps, and the Venti will have 4 pumps.

Nutritional facts

Most Starbucks frappuccinos are not beacons of healthy food – and the Peanut Butter Cup frappuccino is among the drinks to avoid if you want to keep a strict eye on your calorie consumption.

We will outline the calorie information based on the Tall cup size. A single serving contains 310 calories, within the ballpark of a breakfast meal’s calorie requirements (around 300 calories). Most of its calories come from fat, which makes up 61% of the drink (21g), while carbohydrates mainly consist of sugars (21.2g), or 31% of the drink. The protein content is low, only 5.7g, representing 7% of the drink.

The following table contains a summary of this information.

Calorie count (out of 2,000 daily calorie intake)310
Nutrient count (per Tall serving)% of Daily Value
Total Carbohydrates (23.9g)


Dietary fiber (1.3g)

Sugars (21.2g)

Total Fat (21g)


Saturated (11.3g)

Protein (5.7g)7%
Sodium 0.87mg
Vitamin C
Vitamin A

Caffeine information

While the fat and sugar content of the Peanut Butter Cup frappuccino is high, its caffeine is only around 110mg per serving. That is equivalent to slightly more than the caffeine you consume when drinking one coffee cup daily, and its effects on the body are low – you will only see its effects if you consume more than 400mg of caffeine, roughly four servings.

So, what does a Starbucks Peanut Butter Cup Frappuccino taste like?

Chocolate and peanut butter combinations are delicious, and so is this drink – although it is worth noting that toffee nut will work as Starbucks’ version of peanut butter. It is very prominent in its mocha flavor, understandably so due to its base, and the closest thing I would describe it in taste is a Nutella Frappuccino. Its soy milk composition is surprisingly not as prominent in the final taste as you may assume, so you do not need to worry about it unless you cannot take soy milk.

Because of its impressive taste profile, it is an excellent choice if you want a unique spin on the regular menu’s Mocha Frappuccino.

Ways to customize a Peanut Butter Cup Frappuccino at Starbucks

If you cannot consume soy milk, feel free to replicate the texture of whole milk by asking for coconut milk – this remains vegan but tastes similar to dairy. Since the drink is straightforward to order, it does not require numerous customizations to keep up with your preferences.

Additionally, you can omit the whipped cream and/or mocha sauce if you want to reduce your calorie intake. These toppings are sources of fats and sugars, which are already present in the drink and are unnecessary.

How to make Starbucks Peanut Butter Cup Frappuccino at home – Starbucks Caffe Misto Copycat Recipe

Starbucks Secret Menu: Peanut Butter Cup Frappuccino

Starbucks Caffe Misto Copycat Recipe

Kai JordanKai Jordan
Course Drinks
Cuisine American


  • Blender
  • Mug


  • ¼ cup of cold Starbucks espresso or ½ cup of cold Starbucks coffee
  • Ice – 2 cups
  • Milk – ½ cup
  • Chocolate sauce – 2 tablespoons
  • Peanut butter or peanut butter syrup – 3 tablespoons
  • Chocolate sauce (optional)
  • Whipped cream (optional)
  • Xanthan gum – 1/8 pinch (optional)


  • Mix the milk, ice, coffee/espresso, xanthan gum, peanut butter syrup, and chocolate sauce in a blender. Blend them until the mixture is completely smooth.
  • Transfer the mixture to the mug and top with whipped cream or chocolate sauce.
  • Serve while cold.


  • If you want to highlight the chocolate flavor in the drink, you can garnish it with crunchy chocolate java chips or crumbly cookies.
  • If you do not have xanthan gum available, you can substitute it with Agar (replace in a 1:1 ratio), unflavored gelatin (replace 1 part of xanthan gum with 2 parts gelatin), or cornstarch (replace in a 1:1 ratio).

Informative section

How do you order Peanut Butter Cup frappuccino from the Starbucks app?

Because it is a secret menu item, you can only order it using its recipe – this is the same way you would also order it if you were buying it in person. Select a mocha Frappuccino of any size. Under customizations, add toffee nut syrup. For toppings, select whipped cream or any topping of your choice.

Is the Starbucks Peanut Butter Cup frappuccino still available?

Yes, it is widely available in all Starbucks cafés.

Does Starbucks have Peanut Butter Cup frappuccino all year round?

Yes, it is available throughout the year.

Is the Starbucks Peanut Butter Cup frappuccino healthy?

Not really – its carbs and fats are pretty high, and its calorie content makes it unfriendly if your goal is reducing your daily calorie intake.

How much is the Starbucks Peanut Butter Cup frappuccino?

It is among the pricier Starbucks drinks due to its additions. The tall costs $6.45, the grande is $6.95, and the Venti is $7.45.

Is the Starbucks Peanut Butter Cup frappuccino good?

Yes, it is. If you want to splurge on yourself after a hard day, this is the perfect pick-me-up drink, as it is sweet without overpowering your taste buds.

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