Vietnamese Coffee Swirl White Chocolate Blondies

Vietnamese Coffee Swirl White Chocolate Blondies with Cardamom

Sweet Treats for Your Sweet Tooth – February (Chocolate Edition)

With Valentine’s Day coming up, Elizabeth and I are featuring chocolate for this month’s Sweet Treats for Your Sweet Tooth – and I wanted to do something cozy, indulgent, and a little unexpected.

I recently rediscovered a phin coffee filter I’d bought a while back for a client shoot, and it immediately sent me down the “Vietnamese coffee” path. I loved the idea of swirling sweetened coffee—brewed strong and mixed with condensed milk—through a chewy blondie batter, studded with white chocolate chunks and flavored with ground cardamom.

The result is a decadent blondie that is crave worthy and with a little twist—exactly the kind of treat this series is all about.

Why You’ll Love These Blondies

  • Vietnamese coffee is brewed and baked into the blondies
  • White chocolate balances the bitterness of the coffee beautifully
  • Cardamom adds warmth and flavor without overpowering
  • Irresistibly chewy, soft texture
  • Perfect for Valentine’s Day—or anytime you want a coffee flavored treat

Ingredients

Vietnamese Coffee Swirl

  • 3 tablespoons finely ground Vietnamese coffee (or any dark roast)
  • 1/2 cup just-boiled water
  • 1/4 cup sweetened condensed milk

Blondie Batter

  • 1/2 cup (1 stick) unsalted butter, melted and slightly cooled
  • 3/4 cup brown sugar, packed
  • 1 large egg plus 1 egg yolk, at room temperature
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon fine sea salt
  • 1/4 teaspoon baking powder
  • 1/4 teaspoon ground cardamom
  • 1/2 cup white chocolate chips or chunks

How to Make Vietnamese Coffee Blondies

Make the Coffee Swirl

Three-image collage showing Vietnamese coffee dripping from a phin into a glass beaker, condensed milk added to the coffee, and the coffee and condensed milk fully mixed.

Brew the coffee using a phin (or substitute with strong brewed coffee). Measure out 1/4 cup of the brewed coffee and whisk it with the sweetened condensed milk until smooth.

Transfer the mixture to a small saucepan and bring to a gentle simmer, stirring constantly. Let it cook just until glossy and syrupy—this takes only a few minutes. Remove from the heat and allow it to cool slightly. The mixture should be spoonable and thick enough to sit on the batter, but not too thick to swirl

Make the Blondie Batter

Four-image collage showing wet blondie ingredients in a glass bowl, dry ingredients added on top, batter topped with white chocolate chunks, and batter mixed with white chocolate.

Heat the oven to 350°F and line an 8×8-inch pan with parchment paper.

Whisk the melted butter and brown sugar together until smooth. Add the egg, egg yolk, and vanilla and whisk until fully combined.

Gently fold in the flour, salt, baking powder, and cardamom just until no dry spots remain. Stir in the white chocolate.

Assemble and Bake

Four-image collage showing blondie batter spread in a parchment-lined square pan, batter topped with Vietnamese coffee, coffee swirled into the batter, and baked blondies in the pan.

Spread the blondie batter evenly into the prepared pan. Spoon the coffee mixture over the top in loose ribbons, then use a knife to gently swirl it through the batter—just a couple of passes is enough.

Bake until the edges are set and the center is just soft, about 20–22 minutes. Let the blondies cool completely before slicing for the neatest cuts (I like to pop in the fridge).

Tips for the Best Results

  • Don’t over-swirl the coffee mixture or it will disappear into the batter
  • Pull the blondies when the center looks slightly underbaked for the best texture
  • Let the blondies cool fully for the neatest cuts

Sweet Treats for Your Sweet Tooth

Be sure to check out Elizabeth’s chocolate recipe for this month’s Sweet Treats for Your Sweet Tooth series—she’s sharing her Valentine M&M’s fudge brownies and they look delicious!

We share a new sweet treat every month, always centered around a common theme (and hopefully plenty of baking inspiration!).

Let me know if you make this recipe!

Vietnamese Coffee Swirl White Chocolate Blondies

sherisilver
5 from 1 vote
Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Course Dessert
Servings 12
Calories 224 kcal

Ingredients
  

For the Vietnamese coffee swirl:

  • 3 tablespoons finely ground Vietnamese coffee, see Notes
  • 1/2 cup just-boiled water
  • 1/4 cup sweetened condensed milk

For the white chocolate blondies:

Instructions
 

  • Pre-heat the oven to 350 degrees Fahrenheit. Line an 8 x 8 baking pan with parchment paper, leaving an overhang on all sides.

Make the Vietnamese coffee swirl:

  • Brew the coffee according to the phin instructions (see Notes). Measure out 1/4 cup and add the sweetened condensed milk. Whisk to combine. Place in the fridge to thicken slightly as you continue with the recipe (see Notes).

Make the white chocolate blondies:

  • Whisk the melted butter and brown sugar till smooth. Add the egg, egg yolk and vanilla and whisk again. Fold in the dry ingredients till incorporated, then fold in the white chocolate chunks.
  • Transfer the batter into your prepared pan and use a small angled spatula to smooth evenly.
  • Pour the thickened coffee mixture over the top in a ribbon design, then gently swirl through the batter with a thin knife (see Notes).
  • Bake till a tester tests clean, 20 - 22 minutes. Cool in the pan on a wire rack. Once cooled, refrigerate before slicing for the neatest cuts.

Notes

  1. You do not need to purchase or use a phin for this recipe - simply swap the water and coffee called for with 1/4 cup strong hot brewed coffee.
  2. You can omit the cardamom if preferred, and substitute with 1/8 teaspoon ground cinnamon (or nothing at all).
  3. The coffee mixture should have the consistency of syrup - that is, thick yet pourable. If after chilling it is still very thin you can heat it in a small saucepan till simmering, then stir constantly for a few minutes until it thickens up.

Nutrition

Serving: 1gCalories: 224kcalCarbohydrates: 29gProtein: 3gFat: 11gSaturated Fat: 7gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 3gTrans Fat: 0.3gCholesterol: 37mgSodium: 131mgPotassium: 83mgFiber: 0.3gSugar: 21gVitamin A: 272IUVitamin C: 0.2mgCalcium: 55mgIron: 1mg
Keywords blondies, coffee, white chocolate
did you make this recipe?tag @sherisilver on instagram!

FAQs

Can I use espresso instead of Vietnamese coffee?

Yes. Brew it very strong. Vietnamese coffee has a deeper, more chocolate-forward bitterness, but espresso will still work well.

Do I need a phin to make this recipe?

A phin is ideal and fun to use, but a strong pour-over or espresso maker works too.

Why use sweetened condensed milk in the swirl?

It thickens the coffee so it stays visible during baking and gives that classic Vietnamese coffee flavor.

Can I make these blondies ahead of time?

Yes. They keep well at room temperature for up to 2 days or refrigerated for up to 4 days.

Can these be frozen?

Absolutely. Slice, wrap tightly, and freeze for up to 2 months.

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Sheri Silver

About the author

Sheri Silver

Sheri Silver is a New York-based food photographer and recipe developer who has been cooking and baking for over 30 years. She works with brands, authors and restaurants to create recipes that are as beautiful as they are foolproof - and every recipe on this blog has been made, tweaked and eaten in her own kitchen.

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2 Comments

  1. Elizabeth@pineconesandacorns on January 22, 2026 at 1:12 pm

    5 stars
    Sheri, these look amazing! I would never have thought of this combination! I cannot wait to make them.
    xo

    • sherisilver on January 22, 2026 at 3:12 pm

      Thank you Elizabeth! The flavor combo is such a good one; I hope you try them! xo

5 from 1 vote

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