10-Min Keto Mascarpone Mousse (Instant Pot)

Dessert

March 10, 2026

Craving a dessert that’s both sinfully rich and completely guilt-free? Look no further! This Keto Mascarpone Mousse is the answer to your sweet-tooth prayers. In just 10 minutes, your Instant Pot transforms simple, low-carb ingredients into a cloud-like, velvety mousse that will have you swooning. Topped with a luscious, homemade chocolate sauce, this elegant dessert is perfect for a quick weeknight treat or a sophisticated dinner party finale. Let’s get cooking!

Ingredients

• For the Keto Mascarpone Mousse
• 2 cups (450g) Mascarpone cheese, softened
• 1 cup (240ml) heavy whipping cream, sugar-free and cold
• 4 tbsp (60g) plain full-fat Greek yogurt
• ½ cup (120ml) full-fat coconut cream, cold
• 1 tbsp (15ml) coconut oil
• 3 tbsp granulated stevia, or to taste
• 1 tsp (5ml) vanilla extract
• ¼ tsp (1g) agar-agar powder
• For the Sugar-Free Chocolate Sauce
• 2 tbsp (15g) unsweetened cocoa powder
• ¼ cup (60ml) full-fat coconut cream
• ½ tsp (2.5ml) chocolate extract
• 2 tsp granulated stevia, or to taste

Instructions

1. Set your Instant Pot to the “Sauté” function. Grease the inner pot with coconut oil. Add the softened Mascarpone cheese, Greek yogurt, granulated stevia, and vanilla extract. Stir gently until the mixture is warmed through and smooth.
2. Sprinkle the agar-agar powder over the mixture and stir constantly for 2-3 minutes to ensure it fully dissolves and activates. This is key to helping the mousse set.
3. Press the “Cancel” button to turn off the heat. Carefully transfer the warm mascarpone mixture to a large mixing bowl.
4. Pour the cold heavy whipping cream and cold coconut cream into the bowl. Using a stand mixer with a paddle attachment or a hand mixer, beat on high speed until the mousse is light, airy, and well-combined.
5. Evenly divide the mousse among 8 small serving bowls or glasses. Set them aside while you prepare the sauce.
6. To make the chocolate sauce, return the inner pot to the Instant Pot (no need to wash it) and press the “Sauté” button again. Add the coconut cream, unsweetened cocoa powder, chocolate extract, and stevia.
7. Whisk constantly for 1-2 minutes until the sauce is smooth, glossy, and slightly thickened. Press “Cancel”.
8. Drizzle the warm chocolate sauce over each serving of mousse and refrigerate for at least 30 minutes to chill and set completely before serving.

Nutritional Information

• Per Serving (makes 8)
• Calories: 207
• Total Fat: 18.1g
• Net Carbs: 3.2g
• Protein: 8.4g
• Fiber: 0.3g

Pro Tips

• for Success
• For the fluffiest mousse, ensure your heavy whipping cream and coconut cream are very cold before beating. You can even chill your mixing bowl and beaters for 15 minutes in the freezer.
• To avoid a grainy chocolate sauce, sift your cocoa powder before adding it to the Instant Pot. This ensures it dissolves smoothly into the coconut cream.
• Don’t skip the warming step with the agar-agar powder. It needs to be heated and fully dissolved to work as a setting agent for the mousse.
• Add a pinch of espresso powder to the chocolate sauce to deepen its rich, chocolatey flavor without adding a coffee taste.

FAQ

Q: Can I make this keto mousse without an Instant Pot
A: Yes, you can. Simply warm the mascarpone, Greek yogurt, stevia, vanilla, and agar-agar in a small saucepan on the stovetop over low heat. Stir constantly for 2-3 minutes until the agar-agar is fully dissolved, then proceed with the recipe as directed.

Q: Why is my mascarpone mousse not fluffy
A: For the fluffiest texture, it is essential that your heavy whipping cream and coconut cream are very cold before beating. For best results, the pro tips suggest chilling your mixing bowl and beaters in the freezer for 15 minutes before you start.

Q: Is there a substitute for mascarpone cheese in this recipe
A: Mascarpone provides the signature rich flavor. You could use full-fat cream cheese as a substitute, but make sure it is thoroughly softened to avoid lumps. The final taste will be slightly tangier than the original recipe.

Q: How long does this keto mousse last in the fridge
A: This Keto Mascarpone Mousse can be stored in an airtight container in the refrigerator for up to 3-4 days. The texture remains creamy and delicious, making it a perfect make-ahead dessert.

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