My First Taste of Lucuma Magic (And How You Can Make It in 20 Minutes)
I’ll never forget the first time I tried lucuma. It was in a tiny, sun-drenched cafe in Lima, where the air smelled like roasting coffee and sweet potatoes. The dessert that arrived looked simple—a creamy, golden pool in a ramekin—but one spoonful changed everything. It was like biting into a caramel-laced peach, with a texture so velvety it felt like a dream. I was hooked. Fast forward to today, and I’ve been obsessively recreating that magic in my own kitchen. And friends, I think I’ve cracked the code. This **Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche** is that luxurious, silky dream, but it’s shockingly easy to make and totally keto-friendly. It’s a dessert that feels like a celebration, even on a Tuesday.

Why This Custard is Your New Secret Weapon
Let’s be real. Most keto desserts are either a sad, crumbly pile of almond flour or a sugar-free jello nightmare. This? This is the opposite. It’s decadent. It’s luxurious. It’s the kind of dessert you serve when you want to blow someone’s mind without spending hours in the kitchen. The Instant Pot does all the heavy lifting, creating a perfect, gentle steam bath that guarantees a custard so smooth it will make you want to weep with joy. And that topping? An umami-rich dulce de leche that’s deep, complex, and completely low-carb. It’s a flavor explosion that proves you don’t need sugar to create something truly spectacular. This recipe is a game-changer, and you can find the full printable version on my site right here: Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche. Trust me, you’re going to want this in your back pocket.
The Soul of the Dish: Decoding Lucuma’s Golden Secret
So, what exactly is this magical ingredient? Lucuma is a fruit native to Peru, often called the “gold of the Incas.” It looks a bit like an avocado on the outside, but inside, it’s a vibrant, sunset-orange color. The flavor is what truly sets it apart. Imagine the most perfect caramel you’ve ever tasted, blended with the subtle sweetness of maple and a hint of sweet potato. It’s naturally creamy and dense, which is why it’s a dream for making custards. The science behind its magic lies in its high fiber and low sugar content. The fiber acts as a natural thickener, giving our custard that perfect, spoonable body without needing a mountain of thickeners. It also has a unique compound that enhances sweetness, meaning we can use less keto-friendly sweeteners and still get a beautifully sweet result. It’s nature’s own little cheat code for decadent desserts.
The Umami Dulce de Leche Twist
Now, let’s talk about that topping. Traditional dulce de leche is all about caramelized milk and sugar. We’re taking a keto-friendly approach by slowly simmering a mix of heavy cream and a keto sweetener like allulose or erythritol. But the secret weapon here is a tiny splash of coconut aminos. Don’t freak out. It doesn’t taste like soy sauce. It adds a profound, savory depth—a whisper of umami—that makes the caramel notes sing and cuts through the richness in the most incredible way. It’s the difference between a one-note dessert and a symphony.
The Flavor Makers: What You Need to Raid the Pantry
You won’t need a long, intimidating list. The beauty of this recipe is its simplicity. The magic happens with just a handful of powerhouse ingredients. Here’s what you’ll need to gather:
* **Lucuma Powder:** This is non-negotiable. It’s the star of the show. You can find it online or in specialty health food stores.
* **Eggs:** The backbone of any good custard. They provide structure and richness.
* **Heavy Cream:** For that luxurious, silky texture.
* **Keto-Friendly Sweetener:** I prefer allulose for its clean taste and ability to caramelize, but a good erythritol or monk fruit blend will work too.
* **Vanilla Bean Paste or Extract:** For that warm, aromatic background note.
* **A Pinch of Salt:** To balance the sweetness and enhance all the other flavors.
* **For the Dulce de Leche:** Heavy cream, more keto sweetener, and that secret umami booster, coconut aminos.
Let’s Get Cooking: The Step-by-Step
Ready to make some kitchen magic? This is where the Instant Pot becomes your best friend. First, we’re going to make the custard base. In a bowl, whisk together your eggs, sweetener, lucuma powder, vanilla, and salt until it’s smooth and the color of a golden sunset. Then, you’ll slowly whisk in the heavy cream. The key here is to go slowly and whisk constantly so you don’t scramble the eggs. Once it’s all combined, it should look like liquid silk.
Now, pour the mixture into individual ramekins. Cover each ramekin tightly with aluminum foil—this is crucial to keep the water out. Place the trivet in your Instant Pot and add a cup of water. Arrange the ramekins on the trivet. Seal the lid, set the valve to “Sealing,” and pressure cook on HIGH for just 8 minutes. Yes, you heard that right. Eight minutes. Let the pressure release naturally for about 10 minutes before doing a quick release. The gentle pressure cooking is what creates that flawless, crack-free surface.
While the custards are chilling in the fridge (they need at least 4 hours to set up properly), make the dulce de leche. In a small saucepan, combine the heavy cream, sweetener, and coconut aminos. Bring it to a gentle simmer, stirring often, and let it reduce and thicken until it coats the back of a spoon. This will take about 15-20 minutes. Let it cool; it will thicken more as it sits. Once the custards are chilled, peel off the foil, top with a generous drizzle of that gorgeous umami dulce de Leche, and prepare for applause.
How NOT to Mess This Up: A Guide to Custard Catastrophes
Even the simplest recipes have their pitfalls. But don’t worry, I’ve already made the mistakes so you don’t have to.
* **The Scrambled Egg Fiasco:** If you add the hot cream to your eggs too quickly, you’ll get sweet, eggy soup. The fix? Temper your eggs. Slowly drizzle the warm cream into the egg mixture while whisking like your dessert depends on it (it does).
* **The Watery Wreck:** Skipping the foil cover is a rookie move. Without it, condensation from the Instant Pot will drip into your custards, giving them a weird, watery texture. The foil is your force field.
* **The Impatience Trap:** I know you want to eat it immediately. But custard is a patient game. Chilling for at least 4 hours (overnight is even better) allows the custard to fully set and the flavors to meld. Rushing this step leads to a loose, runny mess.
Serving Vibes: Setting the Scene for Your Custard
This isn’t a “shovel it in while standing at the counter” kind of dessert. This is a moment. Picture this: a rainy afternoon, a good book in one hand, and a chilled ramekin of this golden custard in the other. The steam from your coffee mingles with the sweet, caramel scent. The first spoonful is a revelation—the creamy, earthy lucuma followed by the deep, complex sweetness of the topping. It’s also a showstopper for dinner parties. Serve it in elegant glass dishes to show off its gorgeous golden hue. Garnish with a single, perfect raspberry or a sprinkle of toasted pecans for a crunch. It’s a dessert that invites you to slow down, to savor, and to truly taste. For more inspiration on presentation, you can always head to Pinterest for some stunning visual ideas.

Your Golden Custard Questions, Answered
Here are the answers to the questions I get asked all the time about this recipe.
How to freeze Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche?
This is a great question for planning ahead! The custard itself freezes beautifully. To freeze, make sure the custards are completely chilled and set. Wrap each ramekin tightly in two layers of plastic wrap, then a layer of foil. They will keep well in the freezer for up to 3 months. To thaw, transfer them to the refrigerator and let them thaw overnight. The texture might be slightly less firm, but the flavor will be perfect. I recommend adding the dulce de leche topping *after* thawing for the best texture and presentation.
What are the calories in Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche?
For those tracking macros, this dessert is a dream. A single serving (one ramekin) is surprisingly rich but fits well into a keto lifestyle. On average, you’re looking at around 350-400 calories per serving, with the vast majority of the calories coming from healthy fats. It contains roughly 5g of net carbs, 4g of protein, and 35g of fat. Of course, this can vary slightly based on your specific brands of heavy cream and sweetener. The lucuma powder itself is relatively low in carbs and high in fiber, making it the perfect keto-friendly fruit powder.
Can I make this recipe without an Instant Pot?
Absolutely! If you don’t have an Instant Pot, you can use a traditional oven method. Preheat your oven to 325°F (160°C). Place your foil-covered ramekins in a deep baking dish. Pour hot water into the baking dish until it comes halfway up the sides of the ramekins (this is a classic bain-marie or water bath). Bake for 45-55 minutes, or until the custards are set but still have a slight jiggle in the center. The texture will be virtually identical!
Where can I find lucuma powder?
Lucuma powder is becoming more mainstream! Your best bet is online retailers like Amazon or specialty health food stores. Latin American grocery stores are also a fantastic place to look. When buying, look for 100% pure lucuma powder with no added sugars or fillers. It should have a vibrant, golden color and a sweet, malty aroma.
Can I substitute the dulce de leche topping with something else?
While the umami dulce de leche is a perfect match, you can certainly get creative! A simple drizzle of melted sugar-free chocolate, a dollop of keto whipped cream, or a sprinkle of cinnamon would all be delicious. But I highly recommend giving the dulce de leche a try at least once—it’s what makes this recipe truly unique.
So, are you ready to bring a taste of Peru into your keto kitchen? This **Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche** is more than just a dessert; it’s an experience. It’s proof that eating healthy doesn’t mean sacrificing flavor or luxury. Now go make some magic.

Golden Instant Pot Keto Lucuma Custard with Umami Dulce de Leche
Ingredients
Ingredients
- 1 cup heavy cream for a richer custard
- 1 cup unsweetened almond milk or coconut milk for a dairy-free option
- 4 large egg yolks room temperature
- 1/4 cup powdered erythritol or preferred keto sweetener
- 2 tbsp lucuma powder ensure it's pure, unsweetened
- 1 tsp vanilla extract or vanilla bean paste
- 1/4 tsp xanthan gum optional, for thicker custard
- 1/4 cup canned full-fat coconut milk for the dulce de leche
- 2 tbsp powdered erythritol for the dulce de leche
- 1 tsp vanilla extract for the dulce de leche
- 1/4 tsp sea salt for the dulce de leche
- 1 tsp coconut oil for the dulce de leche
