This peanut butter coffee frappe blends chilled coffee, milk, peanut butter, and chocolate syrup into a thick, frosty drink that tastes like a candy bar in a glass. It takes about five minutes, one blender, and ingredients you can pick up at any grocery store.
Topped with whipped cream and a chocolate and peanut butter drizzle, it looks like something from a coffee shop counter but costs a fraction of the price. Serve it as an afternoon pick me up, a weekend breakfast drink, or a cold dessert after dinner.
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Why This Peanut Butter Coffee Frappe Recipe Works
Peanut butter blends smoothly into cold liquids when the blender runs long enough, giving the drink body without any chunks. Two tablespoons gives a clear peanut flavor while still letting the coffee come through.
Using brewed coffee that is fully chilled keeps the ice from melting too fast, which means the drink stays thick instead of watery. Chocolate syrup adds sweetness and a mocha note that links the coffee and peanut butter together.
The recipe is flexible. You can adjust the sweetness with sugar, thicken it with extra ice, or swap in a non dairy milk without changing the method. It makes two glasses, so it is easy to share or to save a second one for later in the day.
Ingredients for Peanut Butter Coffee Frappe
- 1 cup brewed coffee, fully chilled
- 1 cup whole milk
- 2 tbsp creamy peanut butter
- 2 tbsp chocolate syrup
- 1 tbsp granulated sugar, optional
- 1 cup ice cubes
- 1/4 cup whipped cream for the topping
- 1 tbsp chocolate syrup for the drizzle
- 1 tbsp creamy peanut butter, warmed, for the drizzle
Brewed coffee. Use strong coffee, chilled completely, so the flavor stays bold after the ice and milk go in. Cold brew or leftover morning coffee both work.
Milk. Whole milk makes the creamiest result. Oat milk and almond milk blend well too, though almond milk gives a slightly thinner body.
Peanut butter. Creamy peanut butter blends smoother than chunky. Natural peanut butter works if it is well stirred, but the drink may separate sooner.
Chocolate syrup. This sweetens the drink and adds the candy flavor. Add a little more if you like a sweeter glass.
Ice. One cup gives a thick, spoonable texture. Use less for a drinkable texture or more for a thicker one.
How to Make Peanut Butter Coffee Frappe
1. Gather the ingredients Chill the coffee fully and warm the topping peanut butter in the microwave for 10 seconds until pourable.
2. Fill the blender Pour the coffee and milk into the blender first, then add the peanut butter, chocolate syrup, sugar if using, and ice. Liquids go in first so the blades move freely.
3. Blend until smooth Run the blender on high for 45 to 60 seconds, until no ice chunks or peanut butter streaks remain. Stop and scrape down the sides if needed.
4. Taste and adjust Taste the drink and add sugar or more chocolate syrup if you want it sweeter, then blend for another 10 seconds.
5. Pour into glasses Divide the blended drink between two tall glasses, leaving room at the top for the toppings.
6. Add the toppings Swirl whipped cream over each glass, then drizzle with the extra chocolate syrup and warmed peanut butter. Serve right away with a wide straw.
How to Serve Peanut Butter Coffee Frappe
Serve the drink right away in tall glasses with wide straws. It goes well with something baked, such as thick bakery chocolate chip cookies or maple oatmeal chocolate chip cookies. For a breakfast pairing, add a slice of cinnamon streusel coffee cake, and if you want something fruity on the side, try a glass of banana blueberry smoothie.
How to Store and Reheat Peanut Butter Coffee Frappe
This drink is ideal fresh because the ice melts and the layers separate. If you have leftovers, pour them into a lidded jar and refrigerate for up to 24 hours, then shake or stir well before drinking. For a thick drink the next day, pour the leftover blend into an ice cube tray, freeze it, and blend the cubes with a splash of milk.
Tips and Variations for Peanut Butter Coffee Frappe
Freeze the coffee. Pour coffee into an ice cube tray and use the cubes in place of regular ice so the drink never gets watery.
Add the liquids first. Blenders work well when liquid sits at the bottom, so add coffee and milk before the ice.
Go sugar free. Skip the sugar and use a sugar free chocolate syrup for a lower sugar version.
Make it dairy free. Use oat milk and a dairy free whipped topping for the same texture.
Add a banana. Half a frozen banana makes the drink thicker and sweeter without extra sugar.
Warm the drizzle. Ten seconds in the microwave makes peanut butter easy to drizzle, but let it cool slightly so it does not melt the whipped cream.
Watch for peanut allergies. Peanut butter is a common allergen, so tell guests before serving, and use sunflower seed butter as a safe alternative.
Keep the blender clean. Rinse the blender right after use because peanut butter dries hard on the blades. For general guidance on keeping a kitchen clean and food safe, see the Texas AgriLife Extension food safety guide.
Frequently Asked Questions About Peanut Butter Coffee Frappe
What goes into a peanut butter coffee frappe?
The base is chilled brewed coffee, milk, creamy peanut butter, chocolate syrup, and ice. A spoonful of sugar is optional, and whipped cream with a chocolate drizzle finishes each glass.
Can I make a peanut butter coffee frappe without a blender?
A blender gives the smoothest result. A jar with a tight lid works if you whisk the peanut butter into warm milk first, but the drink will be thinner and less frosty.
How do I keep a peanut butter coffee frappe thick?
Use fully chilled coffee, add the ice last, and serve right away. Coffee ice cubes give extra thickness without watering the drink down.
Can I use instant coffee?
Yes. Dissolve 2 teaspoons of instant coffee in 1 cup of hot water, chill it completely, and use it in place of brewed coffee.
Is this drink very sweet?
It is moderately sweet from the chocolate syrup alone. Skip the sugar if you prefer a more coffee forward flavor.
Peanut Butter Chocolate Coffee Frappe
Equipment
- Blender
- 2 tall glasses
- Wide straws
- Measuring spoons
Ingredients
Main Ingredients
- 1 cup brewed coffee chilled
- 1 cup whole milk
- 2 tbsp creamy peanut butter
- 2 tbsp chocolate syrup
- 1 tbsp granulated sugar optional
- 1 cup ice cubes
- ¼ cup whipped cream for the topping
- 1 tbsp chocolate syrup for the drizzle
- 1 tbsp creamy peanut butter warmed, for the drizzle
Instructions
Cooking
- Blend. Add the coffee, milk, peanut butter, chocolate syrup, sugar if using, and ice to a blender and blend on high for about a minute until smooth and frosty.
- Taste. Adjust with a little more syrup or sugar if you want it sweeter, then blend 10 seconds more.
- Pour. Divide the drink between two tall glasses.
- Top. Add whipped cream, then drizzle with chocolate syrup and warmed peanut butter. Serve immediately.
