Decadent Chocolate Strawberry Mousse Bars: The Ultimate Valentine’s Day Delight

This is a sponsored post, written by me and created in partnership with Ghirardelli Chocolate Company. All opinions expressed herein are straight from my heart.
As the long, gray days of winter begin to recede, there’s a special sweetness that heralds the arrival of a much-anticipated holiday: Valentine’s Day. After the festive flurry of the New Year, February often feels like a gentle nudge towards warmer, more vibrant times. It’s a wonderful excuse to embrace all things romantic, joyful, and, of course, delicious! I adore selecting charming cards for my children, discovering unique treats, and planning an intimate, special meal for my husband. But truly, the best part of this season is the delightful explosion of pink and red – it’s a refreshing change, a breath of fresh air after the monochrome chill of January.
Each year, I make it a tradition to share at least one exquisite pink or red dessert, perfect for celebrating love and indulging in a little romance. If you’re looking for more delightful ideas, you can explore all my past Valentine’s Day recipes here. You’ll find a treasure trove of cute and delicious inspirations to make your celebrations even sweeter.
This year, my culinary imagination was particularly sparked by Ghirardelli’s captivating new creation: their Strawberry Bark SQUARES! The moment I saw them, I knew they held the key to an unforgettable Valentine’s dessert. The exquisite blend of rich milk chocolate, creamy white chocolate, and vibrant strawberry in these squares is nothing short of perfection, making them an ideal treat to share with loved ones.

The Enduring Allure of Ghirardelli Chocolate
Regular readers of this blog know well my profound admiration for Ghirardelli chocolate. Their commitment to quality and exceptional flavor profiles has consistently inspired countless delicious creations on this site over the past year and beyond. Working with Ghirardelli products always guarantees a superior result, transforming simple ingredients into truly extraordinary desserts.
Let’s take a delightful stroll down memory lane and revisit some of the wonderful Ghirardelli-inspired recipes we’ve crafted together, each a testament to the versatility and excellence of their chocolate:

We ushered in the vibrant spirit of Spring with an incredibly easy-to-follow tutorial on How to Make Chocolate Bark. This guide wasn’t just about one type of bark; it showcased three distinct and equally delicious variations, demonstrating how effortlessly Ghirardelli’s premium chocolate can be transformed into stunning, customizable treats perfect for gifting or personal enjoyment.

Then, we ventured into truly decadent territory with a show-stopping Chocolate Caramel Chip Cheesecake. This dessert was an absolute dream – sumptuously rich, intensely chocolatey, and incredibly satisfying. Its make-ahead convenience made it an ideal choice for entertaining, ensuring a show-stopping finale to any meal with minimal last-minute fuss.

Just in time for Thanksgiving, we unveiled a heavenly, nearly no-bake Chocolate Cream Pie. With its flaky chocolate crust, airy chocolate mousse filling, and elegant chocolate shavings, it quickly became a favorite for its ease and impressive presentation, offering a lighter yet equally indulgent alternative to traditional holiday pies.

And to conclude 2017 on a festive, high note, we created these absolutely amazing soft Chocolate Peppermint Swig Cookies. These soft, chewy chocolate cookies, generously topped with a creamy sour cream frosting and crunchy Ghirardelli Peppermint Bark, perfectly captured the spirit of the holiday season, becoming an instant classic.
Now, as we embrace the romantic charm of Valentine’s Day, we introduce these beautifully layered Chocolate Strawberry Mousse Bars, another testament to Ghirardelli’s exceptional quality and endless inspiration.

The Sweet Inspiration: Ghirardelli Strawberry Bark SQUARES
When I first encountered Ghirardelli’s Strawberry Bark SQUARES, I was instantly smitten. These aren’t just any chocolates; they are the beloved Ghirardelli SQUARES, reimagined with a sensational new flavor combination that is absolutely perfect for the upcoming Valentine’s holiday. What truly captivates is the harmonious blend of rich milk chocolate, velvety white chocolate, and the bright, natural sweetness of strawberry. It’s a flavor symphony – sophisticated, comforting, and undeniably romantic – making it the quintessential treat for sharing on Valentine’s Day or any moment you wish to infuse with a touch of luxury.

Beyond their incredible taste, these Ghirardelli Strawberry Bark SQUARES are visually stunning. With their elegant layers of milk and white chocolate, speckled with charming little pink strawberry flecks, they make an ideal last-minute gift that looks incredibly thoughtful and luxurious. Imagine presenting these beautiful squares to a loved one – a simple gesture that speaks volumes of affection and appreciation.

Crafting the Perfect Dessert: Chocolate Strawberry Mousse Bars
The exquisite flavor profile and elegant appearance of the Ghirardelli Strawberry Bark SQUARES immediately inspired me to translate that magic into a layered dessert. I envisioned a creation that would capture the same creamy chocolate richness and the sweet, bright essence of strawberry in a form that was both sophisticated and delightful. And so, the Chocolate Strawberry Mousse Bars were born!
These bars are a symphony of textures and flavors, designed to be the perfect conclusion to your special Valentine’s Day meal or any celebration that calls for a touch of elegance. At their core is a melt-in-your-mouth, nearly flourless chocolate torte – a rich, dense, and intensely chocolatey base that provides a luxurious foundation. This torte offers a depth of flavor that complements the lighter layers beautifully, creating a truly satisfying bite without being overly heavy.
Layered atop this decadent base is a whisper-light strawberry mousse. This airy, ethereal layer truly allows the fresh strawberry flavor to shine through, providing a delightful contrast to the rich chocolate. With every bite, it’s like experiencing a ray of sunshine, tasting the sweet essence of summer berries even on a cold February day. The mousse is made with fresh strawberries and a hint of preserves, ensuring a vibrant, authentic fruit flavor that isn’t masked by excessive sweetness.
To complete this masterpiece, each bar is crowned with a luscious white chocolate glaze, adding another dimension of creamy sweetness and a beautiful sheen. Finally, for that ultimate touch of elegance and to tie back to our original inspiration, these bars are garnished with extra whipped cream and a whole Ghirardelli Strawberry Bark SQUARE. This final flourish not only enhances the visual appeal but also reinforces the delightful strawberry and chocolate theme. Prepare yourself for a Valentine’s Day dessert that you and your loved ones will truly cherish and remember!
Tips for Perfect Mousse Bars
- Quality Ingredients: Using high-quality chocolate like Ghirardelli makes a noticeable difference in flavor. Fresh, ripe strawberries are also key for the mousse.
- Patience with Chilling: Allow ample chilling time between layers and for the final set. This ensures clean cuts and a stable mousse.
- Gentle Folding: When incorporating egg whites into the chocolate base and whipped cream into the strawberry mixture, fold gently to maintain airiness.
- Serving Suggestion: These bars are best served chilled. A sprinkle of fresh mint or a few extra strawberry slices can add visual appeal.

For even more fantastic Valentine’s Day recipes and seasonal treats, be sure to explore my “Holiday” Pinterest board!

Chocolate Strawberry Mousse Bars
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Ingredients
For the chocolate base layer:
- 7 ounces (198.45 g) Ghirardelli Bittersweet 60% Cacao Baking Chips
- 1/2 cup (113.5 g) unsalted butter
- 3 large eggs, separated
- 1/2 cup (100 g) granulated sugar
- 1/2 cup (56 g) almond meal
- 1/4 cup (31.25 g) all-purpose flour
- 1/2 teaspoon (0.5 teaspoon) vanilla extract
- 1/4 teaspoon (0.25 teaspoon) almond extract
- 1/4 teaspoon (0.25 teaspoon) kosher salt
For the strawberry mousse layer:
- 3 tablespoons water
- .25 ounces (7.09 g) unflavored powdered gelatin
- 1 cup (244 g) milk
- 4 large egg yolks
- 1/3 cup (66.67 g) granulated sugar
- 4 ounces (113.4 g) fresh strawberries, hulled and finely chopped or pureed (approx. 5 or 6 large berries)
- 2 tablespoons strawberry preserves
- 1 tablespoon lemon juice (from 1/2 lemon)
- 1/8 teaspoon (0.13 teaspoon) kosher salt
- 1 cup (238 g) heavy whipping cream
- Drop of pink food coloring (optional)
For the garnishes:
- 3 tablespoons heavy whipping cream
- 2 ounces (56.7 g) Ghirardelli White Chocolate Baking Bar, chopped
- 2 tablespoons light corn syrup
- 1 cup (238 g) heavy whipping cream, whipped softly with 1/4 cup powdered sugar
- 9 Ghirardelli Strawberry Bark SQUARES
Instructions
To make the chocolate base layer:
- Preheat the oven to 350 degrees F, mist a 9×9-inch square baking pan with non-stick spray, and line it with parchment.
- Place the Ghirardelli Bittersweet 60% Cacao Baking Chips and butter in a small bowl, and microwave in 30-second increments, stirring, until melted and smooth.
- Place the egg yolks and sugar in a large bowl, and whip until pale and doubled in volume.
- Fold the chocolate mixture into the yolks, along with the almond meal, flour, extracts, and salt.
- Place the egg whites in a medium bowl and whip until they can hold stiff peaks.
- Fold the whipped whites into the chocolate mixture, a little at a time.
- Transfer the batter to the prepared pan, and bake for 20 minutes, or until a toothpick inserted in the center of the cake comes out clean or with a few moist crumbs.
- Cool completely, then top with strawberry mousse.
To make the strawberry mousse:
- Place the water in a small bowl and sprinkle the gelatin on top.
- Heat the milk in a small pot over low heat.
- Whisk the egg yolks and sugar together in a medium bowl, until pale and doubled in volume.
- When the milk is steaming, pour it into the yolk mixture in a slow, thin stream, while whisking.
- When all the milk has been added, transfer the mixture back to the pot and cook over low heat, whisking, until slightly thickened (about 5 minutes).
- Stir in the gelatin mixture, the fresh strawberries, strawberry preserves, lemon juice, and salt.
- Cool the mixture to room temperature.
- Whip the cream until it holds stiff peaks, then fold into the strawberry mixture. Tint with food coloring, if using.
- Pour the mousse over the chocolate base, and refrigerate for 2 hours or until set.
To garnish:
- Place the cream, white chocolate, and corn syrup in a heat-safe measuring cup, and microwave in 30-second intervals, stirring, until melted and smooth.
- Pour the glaze over the mousse.
- Allow the glaze to set, then cut into bars.
- Top each bar with whipped cream and a Ghirardelli Strawberry Bark SQUARE.