Protein Iced Coffee Recipe: High-Protein Chilled Coffee Drink

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This protein iced coffee blends cold coffee, chocolate protein powder, chocolate syrup and milk into a refreshing, high-protein, low-calorie morning pick-me-up.

Iced coffee variations like an iced oat milk latte, an iced almond milk latte, or an iced mocha latte are ideal for warm weather. For a different protein coffee option, try a peanut butter coffee.

Recipe Highlights

• High protein & low calorie. This iced coffee contains about 17 g of protein and roughly 160 calories. You can easily increase the protein by adding more powder if desired.
• Made with homemade chocolate syrup. A simple chocolate syrup adds a rich chocolate note without artificial flavoring.
• Customizable. Adjust sweetness, protein level, or chocolate intensity to suit your taste.

Ingredients & Substitutions

• Protein Powder: Chocolate-flavored protein powder works best here, but use any flavor you enjoy. Both whey and vegan protein powders dissolve well—pick one you like since its flavor will be noticeable.
• Coffee: Use chilled brewed coffee or cold brew prepared ahead of time. Ready-made cold brew also works if you prefer convenience.
• Milk: Regular 2% milk gives creaminess. For a vegan option, substitute almond or oat milk.
• Chocolate Syrup: A homemade syrup made from cocoa, sugar and water gives clean chocolate flavor. A store-bought drink syrup can be used, but it may taste more artificial.

Equipment

• A whisk to combine the syrup ingredients.
• A small saucepan to heat the syrup.
• Optional: an iced coffee tumbler or serving glass.

Instructions

Step 1: In a small bowl, whisk together cocoa powder, granulated sugar and water until smooth.

Step 2: Transfer the mixture to a small saucepan and heat over medium-low, stirring frequently for 5–10 minutes until the sugar dissolves and you have a syrupy consistency. Do not let it boil. Remove from heat and let cool slightly.

Step 3: In a mug or shaker, combine the chilled coffee, chocolate protein powder and 1 tablespoon of the chocolate syrup. Stir or shake until the protein powder is fully dissolved.

Step 4: Fill a serving glass with ice and pour the protein coffee over the ice.

Step 5: Top with milk, stir to combine, and enjoy.

Storage

The finished iced coffee is best served immediately. You can make and refrigerate the chocolate syrup in advance: let it cool, then store in an airtight container in the fridge for 1–2 weeks. The recipe yields about ¾ cup of syrup, leaving extra for future drinks.

Expert Tips

• Dissolve protein before icing. Mix the protein powder into the coffee and syrup first to avoid clumps that form if added over ice.
• Keep syrup from boiling. Maintain a gentle simmer when making the syrup; boiling can thicken it too much.
• Freeze coffee ice cubes. Make ice cubes from brewed coffee to keep drinks strong as the ice melts instead of diluting them.

Variations

• Extra Protein: Increase the protein powder to double or triple for more protein; add extra chocolate syrup if the protein flavor becomes too strong.
• Vegan: Use a plant-based protein powder and almond or oat milk in place of dairy milk.
• Vanilla: Swap in vanilla protein powder and vanilla almond milk for a vanilla-chocolate twist.
• Iced Protein Latte: Use a cold milk frother to create foam and pour it over the drink to make a latte-style version.

FAQ

📖 Recipe

Protein Iced Coffee

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• Author: Ali
• Total Time: 10 minutes
• Yield: 1 Serving
• Diet: Vegetarian