Keto lava cake is the ultimate low carb dessert. It’s sweet, rich, fatty, and super indulgent. It makes a great treat for special occasions that will have guests impressed at your baking skills!
Insert the word ‘lava’ anywhere because this cake will be oozing with peanut butter lava once you dig in! It’s a simple molten lava cake to make, but we wanted to go ahead and make a recipe video for you anyway.
The best part of making recipe videos is that we always make two. One for the video itself and one for photography, which meant I had the chance to indulge in this cake twice already!
A “Reeses” Lava Cake Recipe!
This chocolate lava cake is like a massive reeses cup just waiting for you to take a bite. Since you get to dictate how much peanut butter goes in you really can make it exactly like the candy with a 4 to 1 ratio of peanut butter to chocolate.
We first made this keto lava cake without the frozen peanut butter disc, but once we made it and tried it a second time we knew it was vital to allow for maximum peanut butter lava in this recipe.
How to Make A Keto Lava Cake
Ready to make the gooey-est low carb lava cake of your life!? This is by far the best keto recipe out there because it’s molten chocolate cake PACKED with peanut butter.
Ingredients
Our lava cake ingredients are pretty straight forward, but don’t let that stop you from customizing this recipe to make your perfect cake.
To make this recipe you will need, unsweetened cocoa powder, bakers chocolate, peanut butter, butter, heavy whipping cream, an egg, stevia, low carb sweetener, coconut flour, and baking powder. Optionally you can add vanilla extract for extra flavor.
Making a Keto Chocolate Lava Cake
Begin by making your frozen peanut butter disk. In a mixing bowl combine peanut butter and sweetener (if desired). Pour the peanut butter mixture into a parchment paper lined mini springform pan. Freeze until solid.
In a separate bowl combine the butter and bakers chocolate by melting them in the microwave (30 second bursts are best)
Add the heavy cream, egg, and stevia drops to the chocolate butter mixture. Set aside.
Mix together the erythritol, cocoa powder, coconut flour, and baking powder in a separate bowl. Combine the dry and wet ingredients, mixing to get a smooth batter.
Pour half the batter into a greased ramekin or mini springform pan. 4″ springform pans work well for this recipe. Then place your frozen peanut butter disk in the center and top with the rest of your batter. Make sure the peanut butter doesn’t run out into the edges if you decide to not freeze a disk ahead of time.
Bake the gooey lava cake for 13-15 minutes at 400 degrees. The edges should be set, but the center will be jiggly and look like it’s not fully cooked.
Serve right away with some sugar free ice cream. If you used a springform pan you should be able to just move it out onto a plate.
How to Store Keto Chocolate Lava Cakes
This keto friendly gooey chocolate cake is best on the first day. If you’ve tried this recipe then you know the cake batter will continue to cook and then fully set if left to cool and reheat.
If you do want to store leftovers we recommend putting your molten lava cake in an airtight container in the fridge for up to 5 days. When reheating be careful to only cook it just enough to get warm. Anymore and you will probably have peanut butter cake instead of a real lava cake.
What to Serve With This Easy Keto Lava Cake Recipe
Now that we can make keto lava cake i’m sure you’re wondering what you can top this tasty treat with to stay within your low carb diet. There are now a lot of brands who make delicious keto sugar free ice cream that can be used as a lava cake topping.
Some of our favorite keto lava cake toppings are from:
- Enlightened – This is probably top tier sugar free ice cream because they have so many super indulgent flavors you don’t even miss real ice cream.
- Halo Top – Halo top recently launched a keto line that is low in net carbs and uses cookie doughs made of ingredients like almond flour and powdered sweeteners.
- Rebel Creamery – Rebel is one of the first keto dessert/ ice cream companies that only makes keto products. It’s available nationwide now in almost every Walmart making keto easy for the masses. And topping keto dessert recipes even easier.
These are probably the most popular varieties and best keto options for ice cream if you are someone looking to indulge without messing up your diet. These are even great options for topping other keto recipes like a mug cake, not just our delicious chocolate lava cake.
More Chocolate Keto Desserts
While this keto lava cake is definitely a top tier dessert, we have tons more sugar free chocolate dessert recipes on our site. Try our:
- Ice Cube Peanut Butter Cups – With only 1g of net carbs per peanut butter cup you really can’t go wrong. These cups are perfect for all our Reese’s lovers that want a sugar free dark chocolate peanut butter cup.
- Dairy Free Keto Hot Chocolate – Prefer to drink something sweet so you don’t over indulge? Our dark chocolate hot cocoa is the perfect solution, and the best part is that it’s also dairy free!
- Keto Chocolate Chip Muffins – Need one final super indulgent recipe that’s gluten free, low carb, and fits seamlessly into your keto diet? Our keto chocolate chip muffins are exactly what you’re looking for. We like baking up a batch of these on Sundays as a family.
Our blog is full of a never ending supply of desserts, and that goes for chocolate ones too. Try all of our chocolate keto recipes and let us know what you think!
Make this Keto Peanut Butter Cake
Chocolate can be confusing on the keto diet. For that reason we have created a guide to keto chocolate.
We know that most of you are Reese’s fans, or chocolate and peanut butter fans at the very least, so if you want to relive your days of enjoying Reese’s cups (without resorting to the sugar free ones which contain maltitol) you should make our Chocolate Peanut Butter Cake!
Recipe can be quickly added to MyFitnessPal – Search “KetoConnect – Chocolate Peanut Butter Cake”
Ingredients:
- 1 oz Unsweetened Bakers Chocolate
- 2-3 tbsp Peanut Butter
- 2 tbsp Butter
- 1 tbsp Heavy Whipping Cream
- 1 large Egg
- 2 tbsp Low Carb Sugar Substitute
- 5-7 liquid Liquid Stevia
- 1 tbsp Unsweetened Cocoa Powder
- 2 tsp Coconut flour
- 1/4 tsp Baking powder
Instructions:
- Optional Make Ahead: In our video we made a frozen peanut butter disc to optimize peanut butter to chocolate ratio and it’s also perfectly melty when you cut into the cake. You can also choose to dollop in 2-3 tbsp of peanut butter right into the middle. **To increase sweetness you may want to add 5 drops of stevia to the peanut butter.
- Combine bakers chocolate and butter and melt in a microwave safe bowl in bursts of 30 seconds.
- Add cream, egg and stevia drops to the chocolate and butter mixture. Set aside.
- Combine all dry ingredients: erythritol, coco powder, coconut flour and baking powder in a separate bowl.
- Mix the dry ingredients into the wet ingredients until you get a smooth uniform thick batter.
- Pour half the batter into your greased ramekin or springform pan. We use a 4″ springform pan for this.
- Place the peanut butter right in the center without allowing it to run to the edges.
- Pour the second half over the peanut butter.
- Bake in a 400 degree oven for 13-15 minutes.
- You’ll know it’s done when the edges have firmed and the center is still a little jiggly/not fully cooked seeming.
- Serve immediately and enjoy!
Notes
Written by
Megha Barot
Megha has always been a passionate cook, but she took this to a new level after starting her keo journey in 2015. She loves creating new recipes and producing educational content for KetoConnect, which she co-founded in 2016 with Matt. Her passion for healthy eating and personal development continues to thrive. She's the proud mom of two awesome kids.
tyrickawilcox@gmail.com hands down the best keto dessert I’ve ever made !! My only question is after I mix everything together can I jus microwave it instead ? N smaller mugs
Not sure! You could try it! Let us know if you do and how it goes.
This 3.5 net carbs for a whole cake or half of one cake?
For one serving, which is half the cake.
This was so good! I cooked it a little long and subbed almond butter. I can’t wait to make it right next time haha. It’s definitely a keeper!
This was delicious! I split the recipe between two Ramekins and it was perfect! 1 was good and super filling! My new favorite dessert recipe! I did just order some 4” Springform pans though because they are super cute!
Can we use Lily’s chocolate chips instead of the bakers chocolate?
Yep! It will add a lot more sweetness though, so adjust the sweetener.
Meghan, there are lots of good recipes out there but yours are great! Especially this one. We have made it 7 times so far.
We put peanut butter or almond butter or mashed raspberries with low carb sweetener in the center.
Fyi, if you make it in the Instant pot it takes 6 minutes.perfect!
Thanks for ALL your effort and recipes.
I just want to confirm, is it 2 teaspoons of coconut flour? (As opposed to tablespoons) Thanks!!
Yup! it is teaspoons because it is such a small cake.
How many servings are in one 4″ springform pan?
This recipe makes 2 servings.
If I have an erythritol/stevia blend how much would I put in?
I would start with 2 tbsps and add more if you want more sweetness.
made this tonight except I turned it into a mug cake! microwaved for 80 seconds, dolloped the peanut butter in the middle before I microwaved and when I turned it
upside on a plate the pb had gone to the bottom…(now the top of the mug cake)…topped it off with whipped cream?
Made this, LOVE it!!! but have to remember that it serves two. Half of it is filling though, gotta say! If you plan ahead put the peanut butter in the freezer briefly as Matt suggests so you can easily add it between the cake mix. I used a parchment paper cupcake liner, put that into one of the extra 4″ spring pans I have to make it cool easier and faster, anything cools quicker in metal in the freezer. Quick, easy and sooo, sooo yummy!.
Can this be assembled ahead of time and then baked right before you’re ready for dessert? Will the batter “sit” ok for a while? If so, how long and does it have to go in the fridge or is the counter ok for a bit?
The batter should be okay for awhile, just place it in the fridge.
This is the best dessert I have had during my keto diet and it tastes even better than some high carb desserts I have had before. I didn’t have a 4 inch pan so split the batter into two smaller bowls and baked it for 8 mins.
i don’t have a microwave. Can i just melt the chocolate and butter in a pan on my stove?
Yes!
Could I sub out coconut flour for almond flower? I ask as my wife is allergic to coconut.
You could try it, the amounts are not substitutable one for one. Coconut flour is much more absorbent.
I just made the lava cake last night! I absolutely love it. I love it a tad bit more then the truffles and thats a lot! Love you guys for just being who you are. Down to earth!!
HI! When I entered the recipie into my carb manager it’s says one serving has 14 net carbs…. it’s so much more than the info here. Do you know what can be happening? Thanks
Is it counting the carbs from erythritol? We omit those carbs.
Love witching you two. I haven’t been able to find a peanut butter that doesn’t have any suger usually 2 grams is thia ok to use for fat bombs or should i keep looking. I would love to get your cookbook too,where can i get it? This is my 4th week on keto and im not getting enough calories or fat got any tips for me. Lost 11 pounds so far I’m assuming this is water weight, would love to loose more. Thanks for the information you provide. I’ll keep watching. Mickey your neighbor in Ringgold Georgia. ?
If you are losing weight and feeling great, then stick to what is working! Eat keto foods when you are hungry and stop when you are full. 🙂 If you are low-energy, then adding in some more fat go meals with butter, oils, and some fat bombs is an easy way to up your fat intake. As for peanut butter, if the ingredients list just says, “peanuts and salt” then the 2g of sugar is natural sugars and isn’t something to worry about. Look out for added sugars. You can buy our cookbook online here or at most popular bookstores and costco.
So I’m just slightly unclear how much is a serving? on most of the recipes you don’t say how much a serving is just the nutrition facts of a serving and was curious if it’s the whole cake or part of a cake?
The servings are listed right above the recipe. This makes two servings. We don’t weigh/measure serving sizes, we just divide up the portions.
My fiance made this tonight and it was so yummy. He had a hard time trying to make the peanut butter disc so he improvised. Turned out great! Thanks for all you guys are doing and teaching and sharing with us. Love everything we have made from your recipes.