Cinnamon Toast Crunch Greek frappe

What this recipe is

Two ways to make a cinnamon toast crunch greek frappe: a dessert-style blended cereal-milk frappé that tastes like the cereal, and an authentic foam-forward Greek frappé made with instant coffee. We tested exact ratios, soak times, and troubleshooting so you get smooth cereal milk and stable foam every time.

Two ways to make it, quick comparison

Pick a method based on what you want from the drink. The blended cereal-milk frappé is creamy, cold, and dessert-like; it uses cereal-infused milk, espresso or instant coffee, and a blender for a thick, scoopable texture. The Greek frappé is foam-forward, quick, and made with instant coffee shaken to a dense foam and poured over ice.

• Blended cereal-milk frappé: dessert, creamy, needs a blender and cereal milk, ~10-15 minutes active time.
• Greek frappé: foamy, quick, uses instant coffee and a shaker or handheld frother, ~5 minutes.

Recipe – blended cinnamon toast crunch cereal-milk frappé (recommended)

This is our recommended version for a snacky, creamy drink that tastes like Cinnamon Toast Crunch. It uses cereal milk made from 1 cup milk plus cereal soaked 15 minutes, then blended with espresso, ice, and a touch of cinnamon. The texture should be velvety and smooth.

Ingredients

• 1 cup (240 ml) whole milk or plant milk, chilled (see swaps)
• 3/4 cup (28 g) Cinnamon Toast Crunch cereal for cereal milk, plus 1/3 cup (12 g) optional extra cereal to blend for body
• 1 shot (30 ml) espresso or 1 1/2 tsp instant coffee
• 1 cup (240 ml) crushed ice – about 8-10 ice cubes
• 1/4 tsp ground cinnamon or 1 Tbsp cinnamon syrup
• 1-2 tsp granulated sugar, honey, or to taste (optional)
• Optional: whipped cream, crushed cereal for rim, cinnamon dusting

How to make cereal milk

Put 3/4 cup (28 g) cereal in a bowl and pour 1 cup (240 ml) chilled milk over it. Let sit for 15 minutes at room temperature for balanced flavor, or chill for 30 minutes for a stronger cereal taste. Strain through a fine mesh sieve or a double layer of cheesecloth and press gently to extract the flavored milk. Expect about 3/4 cup (180 ml) of cereal milk from this ratio.

Why this works: the short soak extracts the toasted cinnamon-sugar coating without over-extracting starch that makes milk slimy. Pressing too hard pulls solids; a gentle press keeps the milk smooth.

Blend and finish

1. Measure 3/4 cup (180 ml) cereal milk into a blender.
2. Add 1 shot (30 ml) espresso or 1 1/2 tsp instant coffee dissolved in 1 Tbsp water.
3. Add 1 cup (240 ml) crushed ice and 1/4 tsp ground cinnamon and 1-2 tsp sweetener if using.
4. Blend on high for 20-30 seconds until silky and ice is finely crushed. If using extra cereal for body, add 1/3 cup (12 g) now and blend an extra 10-15 seconds.
5. Pour into a tall glass, top with whipped cream and crushed cereal if desired.

Check the texture: if the drink is grainy, blend an extra 10 seconds then pass through a fine mesh sieve. If too thin, add 2-3 ice cubes and pulse. If too thick, stir in 1-2 Tbsp milk.

Troubleshooting

• If cereal milk tastes weak, increase soak to 30 minutes chilled and use the cereal from the soaking as 1 Tbsp toasted garnish.
• If drink is grainy, it means small cereal solids escaped the sieve. Reblend and strain through a fine mesh.
• If coffee flavor is weak, use 1 1/2 tsp instant or a second shot of espresso.

Recipe – Cinnamon Toast Crunch Greek frappé (authentic foam-style)

This is the quick, classic Greek frappé version that delivers a thick foamy head and an effervescent iced coffee experience. It uses instant coffee whipped with cold water to create a stable foam that sits on top of cold water or milk and ice.

Ingredients and equipment

• 2 tsp instant coffee (Nescafé Classic works well)
• 1-2 tsp granulated sugar (optional, helps stabilize foam)
• 2 Tbsp cold water
• Ice and cold water or milk to fill glass
• Equipment: cocktail shaker, jar with tight lid, or handheld frother

Method – how to get perfect foam

1. In a shaker or tall jar, combine 2 tsp instant coffee, 1-2 tsp sugar, and 2 Tbsp cold water.
2. Shake hard for 30-40 seconds or froth with a handheld frother until thick, dense, and glossy foam forms.
3. Fill a tall glass with ice. Spoon the foam over the ice, then top with cold water or milk to taste.

Why this makes a stable foam: instant coffee granules and sugar trap air when agitated, producing tiny bubbles that stay suspended. Shaking 30-40 seconds develops the structure; less time gives weak foam.

Variations and conversions

• To use espresso, you can make a microfoam with 1 shot but you will not get the same thick, stable head as instant coffee foam.
• Convert strength: 1 shot espresso (30 ml) ≈ 1-2 tsp instant coffee in perceived strength. Use 1 1/2-2 tsp instant for bolder taste in blended recipes.

Variations and dietary swaps

For dairy-free, we recommend oat or full-fat soy milk for the blended frappé because they give the creamiest mouthfeel and stable blends. Almond milk tends to thin the drink. For low sugar, replace simple syrup with 1/2 tsp liquid stevia or use unsweetened cereal milk and skip whipped cream.

• Vegan: use oat milk and coconut whipped topping.
• Boozy: add 1 oz cinnamon whiskey or dark rum to the blender after blending and pulse once.
• Protein: add 2 Tbsp Greek yogurt to blended version for a smoothie feel.

Make-ahead and storage

Make cereal milk up to 48 hours ahead and keep refrigerated in a sealed container. Cinnamon syrup keeps 2 weeks refrigerated. Drinks with cereal milk are best served immediately; blended drinks separate if stored for more than 30 minutes.

Equipment and shopping list

You do not need fancy gear. A blender, fine mesh sieve or cheesecloth, and a handheld frother or cocktail shaker cover most needs. If you want the classic Greek foam technique, a sturdy shaker or a Nescafé jar works great. For more on classic technique see our classic Greek frappé recipe.

Nutrition and caffeine estimates

For the blended recommended recipe using whole milk and whipped cream expect ~420 kcal per serving and ~80-100 mg caffeine with one shot of espresso. Using 1 1/2-2 tsp instant coffee yields a similar caffeine range. Swap skim or plant milk to lower calories accordingly.

Notes, pro tips, and common mistakes

Pro tip: strain cereal milk through a double layer of cheesecloth for the silkiest result. A common mistake is soaking cereal too long, which pulls excess starch and makes the milk cloudy or gummy. From my experience, I used to soak cereal for an hour and the milk turned heavy. Now I stick to 15 minutes chilled for balanced flavor without the gummy texture.

For more background on syrups try our homemade cinnamon syrup guide and use it in place of ground cinnamon for a glossy, drinkable sweetness.

Cinnamon Toast Crunch Greek frappe

Recipe by Daniel Harper

Servings

1

servings

Prep time

20

minutes

Cooking time

5

minutes

Calories

420

kcal

Total time

25

minutes

A creamy, dessert-style Cinnamon Toast Crunch frappé using quick cereal milk plus a foam-style Greek frappé method if you want a lighter, foamy drink.

Ingredients

• 3/4 cup (180 ml) cereal milk made from 1 cup (240 ml) milk and 3/4 cup (28 g) Cinnamon Toast Crunch

• 1 shot (30 ml) espresso or 1 1/2 tsp instant coffee dissolved in 1 Tbsp water

• 1 cup (240 ml) crushed ice, about 8-10 ice cubes

• 1/4 tsp ground cinnamon or 1 Tbsp cinnamon syrup

• 1-2 tsp sugar or sweetener to taste (optional)

• Optional whipped cream and crushed cereal for garnish

Directions

• Make cereal milk: soak 3/4 cup (28 g) Cinnamon Toast Crunch in 1 cup (240 ml) chilled milk for 15 minutes, then strain through a fine mesh sieve or cheesecloth and reserve 3/4 cup (180 ml).
• Add 3/4 cup (180 ml) cereal milk, 1 shot (30 ml) espresso (or 1 1/2 tsp instant dissolved), 1 cup (240 ml) crushed ice, and 1/4 tsp ground cinnamon to a blender and blend on high for 20-30 seconds until silky.
• If the texture is grainy, blend an extra 10 seconds then strain through a fine mesh; if too thin, add 2-3 ice cubes and pulse; if too thick, stir in 1-2 Tbsp milk.
• Pour into a tall glass, top with whipped cream and crushed cereal if desired, and serve immediately at about 35-45 degrees F (2-7 degrees C) drinking temperature for a cold frappé experience.

Notes

• Tip 1: Use chilled milk and cereal to keep the drink cold and reduce dilution.
  Tip 2: Strain cereal milk through a fine sieve or cheesecloth for best texture.
  Tip 3: Make cereal milk up to 48 hours ahead and store covered in the fridge.

Make ahead and batch prep

To serve a crowd, multiply cereal milk by the number of servings: for 4 drinks use 4 cups (960 ml) milk with 3 cups (112 g) cereal, soak 15-30 minutes chilled, and strain into a pitcher. Blend individual servings for best texture or blend two servings at once in a high-powered blender.

Where this came from and a quick personal note

We love kitchen hacks. I used to get grainy blended drinks until I learned to strain cereal milk and limit soak time to avoid too much starch. Daniel and I now always press gently when straining; it keeps the milk silky and keeps the drink smooth.

FAQs