Keto Peanut Butter Mousse Recipe

If you’re hunting for a low-carb dessert that delivers all the sweet, creamy decadence of a classic mousse, look no further than Keto Peanut Butter Mousse. This heavenly treat pairs silky cream cheese and peanut butter with fluffy whipped cream for a luscious, satisfying bite that’s as gorgeous as it is guilt-free. Whether you need a quick treat after dinner or an elegant make-ahead dessert for guests, Keto Peanut Butter Mousse has you covered with rich flavor and surprisingly simple prep.

this Recipe

Ingredients You’ll Need

The beauty of this mousse is how a handful of powerhouse ingredients come together to create something ultra-indulgent. Each item on this list serves a unique purpose, from texture and structure to big, bold peanut buttery taste. Let’s walk through what makes each one special in Keto Peanut Butter Mousse.

• Cream Cheese (softened): This forms the smooth, tangy backbone of the mousse and blends beautifully when at room temperature.
• Unsweetened Smooth Peanut Butter: The star ingredient, bringing depth, creaminess, and that signature peanut flavor without any added sugar.
• Powdered Sugar-Free Sweetener (Erythritol or Monk Fruit blend): Go for powdered to ensure the mousse stays light and smooth, never gritty.
• Heavy Whipping Cream: Whipped to stiff peaks, this creates the mousse’s signature airy, spoonable texture.
• Vanilla Extract: Just a splash rounds out the flavors and brings harmony to every bite.
• Optional Salt: If your peanut butter is unsalted, a pinch of salt heightens all the rich, nutty notes.
• Optional Sugar-Free Peanut Butter Cup Garnish: These make for a show-stopping finish and add an extra pop of chocolate-peanut bliss.

How to Make Keto Peanut Butter Mousse

Step 1: Blend the Creamy Base

Start by combining softened cream cheese, smooth peanut butter, your favorite powdered sweetener, vanilla extract, and a pinch of salt (if needed) in a mixing bowl. Beat everything together until the mixture turns thick, creamy, and totally lump-free. This is your mousse’s flavor powerhouse, so take your time mixing until you get a satiny texture.

Step 2: Whip the Cream

In a separate bowl—preferably one that’s been chilling in the fridge—pour in the cold heavy whipping cream. Using an electric mixer, whip until you reach stiff peaks. This is the magic that gives your Keto Peanut Butter Mousse its signature airy lightness.

Step 3: Fold Everything Together

With a light hand, gently fold the whipped cream into your peanut butter mixture. Try to keep as much volume as possible: use a spatula and sweep around the sides and through the middle until no streaks remain. This step ensures every spoonful is impossibly fluffy, never dense.

Step 4: Portion and Chill

Spoon or pipe the finished mousse into serving dishes or decorative glasses. If you prefer a firmer, more cheesecake-like texture, cover and chill the mousse in the fridge for at least an hour—trust me, it’s worth the wait!

Step 5: Add Garnishes

Just before serving, top each dish with a sprinkle of chopped sugar-free peanut butter cups, shaved sugar-free chocolate, or a drizzle of extra peanut butter. These finishing touches make your Keto Peanut Butter Mousse look as good as it tastes.

How to Serve Keto Peanut Butter Mousse

Garnishes

This dessert is a blank canvas for your favorite low-carb toppings. I love a scatter of sugar-free peanut butter cups for crunch and whimsy, or a pinch of chopped roasted peanuts if you’re craving a bit of salty contrast. If you want a decadent finish, a swipe of melted sugar-free chocolate or a fine dusting of cocoa powder takes the presentation up a notch.

Side Dishes

While Keto Peanut Butter Mousse shines on its own, it pairs beautifully with fresh sliced strawberries, blackberries, or raspberries to cut the richness. For an extra-luxe dessert night, serve alongside a bowl of whipped coconut cream or a small square of 85 percent dark chocolate.

Creative Ways to Present

For maximum wow factor, try piping the mousse into individual martini glasses, vintage tea cups, or even mini mason jars. Layer with keto-friendly chocolate crumbs or chopped nuts for a no-bake parfait. If you’re feeling festive, top each serving with a swirl of whipped cream and a mini peanut butter cup perched on the rim.

Make Ahead and Storage

Storing Leftovers

Leftover Keto Peanut Butter Mousse keeps happily in the fridge, tightly covered, for up to 3 to 5 days. Simply spoon into airtight containers and enjoy a chilled treat whenever your sweet tooth strikes. The mousse will firm up slightly as it rests, making for a creamy, almost cheesecake-like texture.

Freezing

If you’d like to store the mousse for a longer stretch, freezing works beautifully. Portion into single-serve containers, cover well, and freeze for up to 1 month. To serve, transfer to the fridge a few hours ahead, or enjoy semi-frozen like an extra-rich peanut butter ice cream!

Reheating

While Keto Peanut Butter Mousse is meant to be enjoyed cold or at room temperature, you can let it sit on the counter for 15 to 20 minutes to gently soften straight from the fridge. Microwaving isn’t recommended, as it will collapse the airy whipped texture.

FAQs

Can I use crunchy peanut butter instead of smooth?

Absolutely! If you like extra texture, feel free to swap in a natural crunchy peanut butter. Just be sure it’s unsweetened and stir it well before measuring to ensure even consistency in your mousse.

Is it possible to make Keto Peanut Butter Mousse dairy-free?

Yes, you can experiment with dairy-free alternatives! Try swapping the cream cheese with a high-quality dairy-free cream cheese, and use canned coconut cream (chilled and whipped) instead of heavy whipping cream for a deliciously creamy, dairy-free version.

What’s the best sweetener for Keto Peanut Butter Mousse?

Powdered erythritol or a monk fruit blend gives the smoothest, most seamless finish. Steer clear of granulated sweeteners, which can make the mousse gritty. If you only have granular, pulse it in a blender or food processor first.

How can I make this nut-free?

For a completely nut-free twist, substitute sunflower seed butter for the peanut butter. The flavor profile will be slightly different but still rich, creamy, and totally satisfying.

Can I double or halve the recipe?

Yes! Keto Peanut Butter Mousse is incredibly forgiving—feel free to double it for a crowd or halve it for single servings. Just keep the ingredient ratios the same, and you’ll have perfect mousse every time.

Final Thoughts

Trust me, once you try this Keto Peanut Butter Mousse, you’ll have a new go-to treat for every season and craving. It offers that perfect balance of rich, nutty satisfaction and airy, cloudlike texture. The best part? It’s ridiculously easy, so you can whip up a batch whenever dessert inspiration strikes. Grab your mixer and give it a go—you’ll be amazed how luscious and low-carb dessert can be!

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