In the bowl of a stand mixer fitted with the whisk attachment or in a large bowl using an electric mixer, beat cream cheese, peanut butter, confectioners’ sugar, vanilla, and heavy cream until thoroughly combined and fluffy; about 3 minutes.: As you begin whisking, notice how the mixture transitions from dense and tacky to lighter and smoother, releasing a gentle nutty aroma combined with a subtle tang from the cream cheese . The sound will shift from heavy thumping to a softer, airy whisking, and visually you should see peaks that are soft and hold shape briefly, indicating air has been incorporated. This lightness is critical because it keeps the mousse from feeling heavy in the glass and allows it to contrast with the crunchy cookie bits. A frequent mistake is starting with cold cream cheese , which creates lumps, so ensure it is fully softened at room temperature for even blending. If you see tiny bits of unmixed cheese, stop and scrape the bowl well, then continue whisking to achieve a uniformly smooth texture.
Place about 1 chopped Tagalong® into the bottom of each mini parfait glass. Pipe or spoon in a layer of peanut butter mousse. Add a layer of chocolate fudge sauce and repeat layers. Top with whipped cream and finish with chopped Tagalong® cookies.: The first layer of Tagalong Cookies sets the stage by introducing crisp texture right away, and it also soaks up a little moisture, anchoring the mousse above. When placing cookie pieces, vary sizes so you get both larger shards for crunch and fine crumbs for even distribution. You will hear a faint crumble as the pieces settle into the glass, and the visual contrast between cookie and glass is pleasing. Avoid packing the cookies too tightly, as that can prevent the mousse from settling evenly and may create a dense bottom. If your cookies seem stale, chop them finer so they soften a bit against the mousse instead of remaining overly hard.
Pipe or spoon in a layer of peanut butter mousse: The mousse should feel silky and light, gliding from the spatula or piping bag in gentle ribbons that mound slightly before settling. The aroma will be richer now, with the peanut butter scent deepening and the sweetness balanced. Piping gives a neat, professional look and helps control layer thickness, while spooning is fine for a more rustic appearance. A common misstep is overfilling the glass at this stage, which leaves no room for additional layers, so aim for a modest layer that complements the cookie base. If the mousse seems too loose, chill it briefly to firm up before continuing.
Add a layer of chocolate fudge sauce and repeat layers: When you drizzle the fudge sauce , pay attention to its viscosity, it should form dark ribbons or small pools rather than running straight through to the bottom. The sauce adds moistness and a cocoa bitterness that ties the dessert together. As you repeat layers, the contrast of pale mousse and dark chocolate becomes visually striking and promises flavor variety in every bite. Try to vary the thickness of the fudge so some bites are more chocolate forward, and others more peanut butter forward. One mistake people make is warming the sauce until it is too thin, causing it to sink through layers, so warm gently and test a small amount before adding it to the glasses.
Top with whipped cream and finish with chopped Tagalong® cookies: The final whipped heavy cream should hold soft peaks and sit like a cloud atop the parfait, offering a cool, airy counterpoint to the denser mousse. As you add the chopped cookies as a finish, they provide a last textural pop and make the presentation irresistible. You may notice a slight sweet dairy scent from the whipped cream that lightens the overall profile. Avoid overwhipping the cream into stiffness, because it can become grainy and lose its silky mouthfeel. If you want a glossier finish, lightly brush the top with a small amount of fudge sauce , but remember that too much can make the top soggy when stored.