Published: July 17, 2026

By Alissa Saenz, ConnoisseuriusVeg.com

For many, the taste of a whoopie pie evokes a powerful sense of nostalgia, a sweet echo of childhood summers and visits to local farmers’ markets. These delightful confections, traditionally featuring soft, cake-like rounds sandwiching a creamy, marshmallow-infused filling, have long held a special place in the hearts of dessert lovers. However, for those who have embraced a plant-based lifestyle, the path to reliving this cherished treat has been paved with culinary challenges.

Alissa Saenz, the celebrated vegan food blogger behind ConnoisseuriusVeg.com, tackles this very challenge in her latest recipe, offering a meticulously crafted vegan rendition of the classic whoopie pie. Saenz, who transitioned to vegetarianism at the age of 13, admits that the memory of her childhood whoopie pie experiences is hazy. Yet, for over three decades, the allure of these decadent treats, particularly those prepared by Amish bakers at local markets, has remained a potent temptation. While her commitment to a meat-free diet has been unwavering, the siren call of a cake and cream sandwich proved a far more formidable culinary hurdle to overcome.

The Marshmallow Conundrum: A Vegan Baking Breakthrough

The primary obstacle in creating a truly authentic vegan whoopie pie lies in replicating the signature marshmallow filling. Saenz recounts her previous successes in veganizing other marshmallow-centric desserts, such as vegan Rice Krispie treats, ambrosia salad, and s’mores cookies, all achieved through the judicious use of commercially available vegan marshmallows. However, this familiar approach proved insufficient for the delicate balance required in a whoopie pie filling.

"Sadly, vegan marshmallows didn’t work for my whoopie pie filling," Saenz explains. "It turned into a big, clumpy marshmallow mess." This setback, rather than deterring her, spurred further innovation. The solution, it turned out, was not to force a vegan marshmallow substitute, but to reimagine the filling entirely.

A Flourishing Filling: The Ermine Frosting Adaptation

Instead of relying on marshmallows, Saenz ingeniously adapted her renowned vegan ermine frosting, a recipe featured in her popular vegan red velvet cake. This culinary pivot has yielded a filling that is not only devoid of animal products but also achieves a sublime texture and flavor profile. The result is a "fluffy vanilla filling" that perfectly complements the rich, chocolate cake rounds.

"No problem, though! We actually don’t need marshmallows here," Saenz emphasizes. "These vegan whoopie pies are stuffed with a fluffy vanilla filling adapted from my vegan ermine frosting… then sandwiched between two tender chocolate cake rounds. And let me tell you, biting into one of these babies is the most fun I’ve had in, like, three decades." This enthusiastic endorsement underscores the success of her inventive approach, promising a dessert that is both nostalgic and entirely satisfying for the modern vegan palate.

The Art of the Vegan Whoopie Pie: A Step-by-Step Culinary Journey

Saenz meticulously details the creation process, breaking down the recipe into manageable steps with clear instructions and helpful tips. The journey begins with the preparation of the filling’s base: a roux.

Crafting the Creamy Base: The Roux

"Make the roux," Saenz instructs, highlighting its crucial role as the thickener for the filling. This foundational step requires whisking together flour, sugar, non-dairy milk, and coconut milk. The mixture is then brought to a simmer over medium heat, where it thickens rapidly. Crucially, the roux must cool completely before proceeding. Saenz advises covering it directly with plastic wrap or whisking it occasionally to prevent a skin from forming, ensuring a smooth texture for the final filling.

The Rich Chocolate Rounds: Building the Cake Batter

Simultaneously, the foundation for the chocolate cake rounds is laid. This involves preparing a "flax egg" by combining ground flaxseed with non-dairy milk, allowing it to gel. While the flax egg rests, the dry ingredients—flour, cocoa powder, optional espresso powder for depth of flavor, baking powder, baking soda, and salt—are combined.

The wet ingredients are then brought together. The bloomed flax egg is creamed with room-temperature vegan butter, sugar, and vanilla extract using an electric mixer. The remaining non-dairy milk is gradually drizzled in, followed by the meticulously mixed dry ingredients, incorporated in stages. The resulting batter is described as uniquely thick and fluffy, falling somewhere between traditional cake batter and cookie dough, a consistency perfectly suited for creating the characteristic whoopie pie shape.

Shaping and Baking the Cakes: The Art of the Dropped Round

The batter is then portioned onto parchment-lined baking sheets. Saenz recommends using a cookie scoop for uniformity, though she reassures bakers that imperfections in shape are forgivable, as the cakes tend to round out during baking. The rounds are then baked until they have spread and puffed up, passing the "spring back" test when gently pressed.

Assembling the Masterpiece: Filling and Finishing

Once the chocolate cake rounds have cooled completely, the focus shifts back to the filling. The cooled roux is then incorporated into a mixture of creamed vegan butter, shortening, and vanilla extract. This process, executed with an electric mixer, transforms the ingredients into a lusciously creamy and fluffy filling.

The final assembly is straightforward yet requires a delicate touch. Approximately two tablespoons of the vanilla filling are applied to the flat side of one cake round. Saenz notes that while a pastry bag can be used for a more refined presentation (as seen in the accompanying photographs), a spoon is perfectly adequate for home bakers. The second cake round is then gently placed on top, creating the iconic whoopie pie.

The Importance of Patience: Cooling and Storage

Saenz emphasizes the need for patience, recommending that the assembled whoopie pies be chilled, especially if not consumed immediately. This allows the filling to firm up, preventing it from becoming too soft, particularly in warmer weather. She provides practical advice for storage: an airtight container in the refrigerator for up to four days, or in the freezer for up to three months. To prevent sticking, she suggests storing them in a single layer or separating stacked pies with parchment paper.

Variations and Nostalgia

While the classic chocolate and vanilla combination is a guaranteed crowd-pleaser, Saenz hints at the potential for variations, encouraging bakers to experiment with different flavor profiles. The article also includes a curated list of "More Nostalgic Vegan Treats," suggesting a broader theme of culinary comfort and reminiscence.

The publication of this recipe on July 17, 2026, marks a significant moment for vegan bakers and dessert enthusiasts. It represents not just a successful veganization of a beloved classic, but a thoughtful and innovative approach to recreating the joys of childhood treats without compromise. Alissa Saenz’s dedication to flavor, texture, and accessibility shines through in this delightful recipe, offering a sweet return to cherished memories for a new generation of plant-based dessert lovers.