Microwave White Chocolate Macadamia Nut Cookie
Published July 5, 2021 • Updated March 14, 2026
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I built this single-serve microwave white chocolate macadamia nut cookie for the nights when I want one fresh cookie, not a whole batch staring at me from the counter. It's low carb, egg-free, and ready in about 90 seconds at 70% power.
I tested this cookie at full microwave power first. The edges went rubbery, the center stayed raw, and the macadamia nuts had zero toastiness. Dropping to 70% power for 60-90 seconds changed everything. The edges set up, the nuts got warm and toasty, and the white chocolate chips melted into little pockets without scorching. That specific power setting is the result of real testing, not a guess.
What makes this different from every other keto cookie recipe I’ve posted (like my keto chocolate chip cookies or my almond flour cookies) is the format. One cookie. One bowl. No preheating. Most white chocolate macadamia nut cookie recipes make 12-24, and if you’re the only person in your house eating keto, you know what happens to the other 23. You eat them, or you throw them away. Neither feels great.
The texture here comes from a small but deliberate decision: 1 teaspoon of coconut flour alongside the almond flour. I’ve made dozens of single-serve cookie recipes with almond flour alone, and they all have that slightly gummy center that never quite sets. The coconut flour absorbs just enough moisture to firm the structure without making it dry or crumbly. It’s a tiny amount, but it’s doing real work.
If you want to batch this (and I’d recommend it), a reader named Stephanie started making six portions of dough on Sundays and refrigerating them separately. Every night, she pulls one out, 75 seconds at 70% power, fresh cookie. That fridge batch method is something I’m now doing myself. The dough holds for 3-4 days without any change in texture or flavor. If you like my microwave peanut butter cookie, this is the white chocolate version of that same single-serve approach.
One more thing I want to be clear about: each cookie has just 2g net carbs. That’s with the sugar-free white chocolate chips and macadamia nuts included. You’re not sacrificing anything to get a warm, chewy cookie on a weeknight.
How to Make a Microwave White Chocolate Macadamia Nut Cookie
The single most important detail is microwave power level. Set it to 70%, not full power. Full power cooks the outside too fast and leaves the inside raw, which is how you end up with a rubbery puck instead of a cookie. At 70% for 60-90 seconds, the heat distributes evenly enough that the edges set up while the center stays soft and chewy.
After microwaving, let it cool on the counter for a full 3-5 minutes. I know that’s hard. But the cookie continues to set as it cools, and if you pick it up too early, it’ll fall apart. The cooling is part of the baking process, not optional patience.
A variation I picked up from a reader: try browning the butter on the stove before mixing. It adds about a minute of extra work, but the nutty depth it gives the macadamia nuts is worth it. I’ve been making it this way every time since I tried it. If you like that toasted, caramelized flavor in cookies like my keto cookie bars, browned butter here does the same thing.
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Ingredients
2 tablespoons almond flour -
1 tablespoon unsalted butter, softened
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2 teaspoons monk fruit blend sweetener
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1 teaspoon coconut flour
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1/4 teaspoon vanilla
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pinch of salt
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1 tablespoon sugar free chocolate chips
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1 tablespoon chopped macadamia nuts
Step by Step Instructions
Step by Step Instructions
Mix cookie dough
In a small bowl, combine almond flour, butter, monkfruit or erythritol blend sweetener, coconut flour, vanilla, salt and chocolate chips. Use a fork to combine.
Roll and press into cookie
Gather all the dough and roll into a ball. Press the ball down to flatten into a cookie shape onto a sheet of parchment paper.
Microwave instructions
Bake cookie in the microwave at 70% power for 60-90 seconds. Let cool completely before handling. Cookie will continue to set as it cools.
Nutrition disclaimer
The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
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Get My Macros + Recipes →Frequently Asked Questions
Why did my cookie come out rubbery in the microwave?
I had this exact problem the first time I made it. Full microwave power cooks the outside too fast while the center stays underdone, and the whole thing turns dense and rubbery. Drop to 70% power for 60-90 seconds and let it cool completely on the counter. The cookie sets as it cools. Two of my readers independently ran into the same full-power mistake before landing on 70%, so it's not just me.
Can I make the dough ahead and refrigerate it?
I started doing this after a reader shared her method and now it's my default. Make 5-6 portions of dough, roll each one into a ball, and store them in separate small containers in the fridge. They hold for 3-4 days. When I want a cookie, I pull one out, press it flat, and microwave at 70% for about 75 seconds straight from the fridge. No thawing, no waiting.
Can I freeze the cookie dough for later?
I've frozen individual dough balls wrapped in plastic wrap and they kept well for about a month. When I'm ready, I let the dough thaw in the fridge overnight, then press and microwave as usual. The texture stays the same as fresh. This is a great way to keep keto cookie dough on hand without any waste.
What's the best brand of sugar-free white chocolate chips for this recipe?
I use ChocZero. I've tested a few brands and ChocZero is the only one that melts into creamy pockets the way real white chocolate chips should. They're sugar-free and alcohol-free, which means more cocoa butter and less of that chalky, waxy texture you get from brands sweetened with sugar alcohols. The difference is obvious in a single-cookie recipe where every ingredient has to pull its weight.
Can I use browned butter instead of softened butter?
I started doing this after a reader suggested it and I haven't gone back. Brown the butter in a small pan for about a minute until it smells nutty and the solids turn golden, then let it cool to room temperature before mixing. The nutty depth it adds makes the macadamia nuts pop. It's one extra minute of work and it transforms the flavor.
How do I know when the microwave cookie is done?
It won't look done when the microwave stops, and that's normal. When I pull mine out, the center still looks slightly underset and soft. The cookie finishes setting as it cools over 3-5 minutes on the counter. If it looks fully baked in the microwave, you've already overcooked it. I wait the full 5 minutes before touching it, even though that's the hardest part.
Can I use regular flour instead of almond flour?
I've only tested this with almond flour (paired with a teaspoon of coconut flour for structure), and the texture depends on that combination. Regular all-purpose flour would work if carbs aren't a concern, but the result will be a different cookie. The almond flour gives it that dense, chewy quality I built the recipe around.
How can I make this cookie dairy-free?
I've swapped the butter for coconut oil and it works. Use the same amount, measured solid. The coconut oil version is a little less rich (butter has a flavor that coconut oil doesn't replicate exactly), but the texture holds up. I'd still use the ChocZero white chocolate chips since they're already dairy-free.
I was skeptical microwaving raw cookie dough would produce anything worth eating. First try at full power confirmed it, came out dense and weirdly rubbery. Dropped it to 70% like the recipe says and let it run about 75 seconds, and the edges actually set up, the macadamia nuts got this warm toasty quality I didn't expect. Still not sure I understand the science but I've made it three times this week.
Full power was my first test too, and yeah. The macadamias need that slower heat to get toasty instead of just cooked. Three times in a week tracks.
I've made probably six or seven different single-serve keto cookie recipes over the past year, and most of them have that gummy almond flour center that never quite sets right. This one is different. The coconut flour (just a teaspoon) does something to the texture that the all-almond-flour versions miss, and the macadamia nuts add this buttery crunch that makes it feel more like an actual bakery cookie than a workaround. I did 80 seconds at 70% power and let it cool on the counter for a full five minutes, which I usually skip with microwave desserts. Waiting was worth it. Still a touch soft in the center for my taste (hence four stars, not five), but I'd take this over any of the others I've tried. Going to try a little extra coconut flour next batch to see if that firms it up more.
Add a quarter teaspoon more, not a half. Coconut flour absorbs fast and the texture shifts pretty quickly once you overshoot it.
Made six portions of dough on Sunday and refrigerated them separately. Every night this week, 75 seconds at 70% power and I have a fresh cookie. Four stars because the single serving could really use a few more macadamia nuts, but the batch fridge method is something I'm telling every keto person I know.
The fridge batch method is so smart. And more macadamia nuts is fair, I'm not going to argue that. I'd just rough chop them bigger so they're actually bites instead of little flecks.
Used browned butter instead of softened and it changed everything. That extra minute on the stove added this nutty depth that made the macadamias pop way more. Doing it this way every time now.
Browned butter in a single-serve microwave cookie is not something I thought to try. That nuttiness with the macadamias makes total sense though. Stealing this.
Never made a cookie in the microwave on purpose before (only for reheating, obviously) and I almost skipped to the oven instructions, but the 70% power thing felt too specific for me to ignore. Came out genuinely chewy. I let it cool the full time like it said and I think that made a difference. Warm, cozy, exactly what I needed on a cold night, and way less dangerous than making a full batch.
The 70% power thing really does matter. I tested at full power first and the edges went rubbery. And yeah, the cooling is part of it too.
These are amazing!!!!
Ha, mine too. The hardest part is not making two.