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Keto Chocolate Mousse Sandwich Cookies

4.8 stars, average of 130 ratings

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If you’re looking for a show stopping keto cookie recipe for a special occasion, these low-carb chocolate sandwich cookies tick all the boxes — pretty, oozing and utterly delicious. They make a great edible gift for birthdays, Mother's Day, Valentine's Day and the holiday season!

Filled with a simple sugar-free chocolate mascarpone mousse, these keto-friendly chocolate cookies are great fun to bake with kids too. Give them the mousse to make, they’ll have fun licking the bowl clean. I know I did!

For dairy-free filling, the mascarpone cheese and whipping cream can be substituted with 1 cup of coconut cream. For a nut-free option, use sunbutter instead of almond butter. Sweetener can be used to taste or partially substituted with liquid stevia.

Hands-on Overall

Serving size sandwich cookie

Allergy information for Keto Chocolate Mousse Sandwich Cookies

✔  Gluten free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Fish free
✔  Shellfish free
✔  Beef free

Nutritional values (per serving, sandwich cookie)

Net carbs3.3 grams
Protein4.9 grams
Fat21.6 grams
Calories228 kcal
Calories from carbs 6%, protein 9%, fat 85%
Total carbs5.8 gramsFiber2.4 gramsSugars1.8 gramsSaturated fat8.2 gramsSodium60 mg(3% RDA)Magnesium51 mg(13% RDA)Potassium150 mg(7% EMR)

Ingredients (makes 13 sandwich cookies)

Chocolate mascarpone mousse:


  1. Preheat the oven to 140 °C/ 285 °F (fan assisted), 160 °C/ 320 °F (conventional). Mix the nut butter and coconut butter together in a mixing bowl. (Some store-bought products will have a layer of oil on top which you should not use in this recipe or it may affect the texture.) Add the Erythritol and salt. Stir.
    Note: Apart from store-bought nut butter, you can easily Almond & Cashew Butter, coconut butter or other options such as sunbutter at home. Keto Chocolate Mousse Sandwich Cookies
  2. Add the egg and mix well.
    Keto Chocolate Mousse Sandwich Cookies
  3. Form into a ball. If the dough is too runny (too much oil in the nut butter), add up to 4 tablespoons of ground almonds to thicken. Place in the fridge for 20 minutes to firm up.
  4. Roll the dough between 2 sheets of baking paper until about 1/2 cm (1/4 inch) thick.
    For a super quick no-rolling way: Simply create 26 balls (about 15 g/ 1/2 oz each) and then flatten using the bottom of a glass jar or your hand. They won't be perfectly symmetrical but still pretty! Keto Chocolate Mousse Sandwich Cookies
  5. Cut out your cookies using a 5 cm (2 inch) diameter cutter and careful place using a spatula onto a greaseproof lined baking tray.
  6. Roll the remaining dough back into a ball and repeat the rolling between 2 sheets of greaseproof and cutting step until all the dough is used up. You should get about 26 cookies in total.
    Keto Chocolate Mousse Sandwich Cookies
  7. Bake in the oven for 30-35 minutes until golden. Carefully flip after about 20 minutes for even cooking. Remove from the oven and allow to cool on a wire rack.
  8. Meanwhile, add all the mousse ingredients to a mixing bowl and whisk with an electric whisk until smooth and thick. Don’t over whisk or the cream may curdle.
    Keto Chocolate Mousse Sandwich Cookies
  9. Spread about 1 tablespoon of the filling onto one half of a cookie and top with another cookie to form a sandwich.
    Keto Chocolate Mousse Sandwich Cookies
  10. Repeat until all the cookies have been filled. Optionally, dust with more cacao powder. Keto Chocolate Mousse Sandwich Cookies
  11. Store in fridge for up to 3 days. Dry cookies (no filling) can be stored in the freezer for up to 3 months. Keto Chocolate Mousse Sandwich Cookies

Ingredient nutritional breakdown (per serving, sandwich cookie)

Net carbsProteinFatCalories
Almond & cashew butter
2 g3.1 g11.7 g124 kcal
Coconut butter, organic, unsweetened
0.3 g0.3 g2.6 g27 kcal
Erythritol (natural low-carb sweetener)
0.2 g0 g0 g1 kcal
Egg, whole, fresh, raw (free-range or organic eggs)
0 g0.5 g0.4 g6 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Vanilla extract, powder (vanilla bean)
0 g0 g0 g1 kcal
Mascarpone cheese
0.2 g0.5 g3.3 g32 kcal
Cream, heavy whipping, pouring, full-fat (30-40% fat)
0.2 g0.2 g3.5 g34 kcal
Cocoa powder, raw (cacao)
0.3 g0.2 g0.2 g3 kcal
Vanilla extract, powder (vanilla bean)
0 g0 g0 g1 kcal
Erythritol (natural low-carb sweetener)
0.1 g0 g0 g0 kcal
Total per serving, sandwich cookie
3.3 g4.9 g21.6 g228 kcal

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Jo Harding
Creator of

Jo Harding

Food is one of life’s most powerful medicines. I’m a true testament that once you find the right approach for you, you can overcome poor health through the healing power of food.

I believe the secret to radiant health starts and ends with a healthy gut so my recipes are all grain, gluten and refined sugar free. Most are also dairy-free.

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Comments (6)

I found chocolate mascarpone cheese t the grocery store. I want to make you chocolate mascarpone filling cookie. How would I modify this recipe?

Hi Kim, as long as there is no added sugar in the mascarpone filling, you could just whip it with 1/2 cup cream plus the vanilla and sweetener (skip the cacao).

Would regular butter work in place of the nut butter?

I'm afraid it would not. Regular butter is 100% fat while almond butter is made with blended almonds. You could use any other nut butter, coconut butter (blended dried coconut meat), or seed butter such as sunflower seed butter. I hope this helps!

Hi Martina,
I haven't tried this recipe and couldn't figure out a way to just send you an email, so I decided to post on this blot item.
I wanted you to know that I have tried quite a few of your recipes recently - fathead dough, your bread, buns, stromboli, chicken braised in cream, etc., etc., and they have all turned out so WELL!!!!
The fathead dough is a game changer for sure and the stromboli a faavourite for my husband (who doesn't do keto, but eats what I cook, so he is kind of there).
Anyway, thank you for all you do, for your precision and careful testing!  Your recipes work for me and they have expanded my keto portfolio away from basic meat/veggies that we were doing.
Thank you thank you thank you!!  

Thank you so much Linda, I really appreciate your kind words! I'm so happy to hear that!