There’s something magical about the combination of cool peppermint and rich dark chocolate—especially when it arrives in the form of a soft-baked, grain-free cookie that won’t derail your low-carb goals. I first whipped up a test batch of these Keto Mint Chocolate Chip Cookies last March, when the weather in Ohio couldn’t decide between winter and spring. One afternoon it snowed, the next it hit 65 °F, and the only constant was my craving for something fresh-tasting yet comforting. Traditional mint-chip ice cream was out (too much sugar), and store-bought “keto” cookies always tasted like cardboard.

So I pulled out my favorite grass-fed butter, a bottle of pure peppermint oil, and a bar of 100 % cacao chocolate that had been hiding in the pantry since Valentine’s Day. After three rounds of tweaking the ratios—swapping erythritol for allulose for better browning, adding a touch of xanthan gum for chew, and chilling the dough so the mint could bloom—I landed on a cookie that disappeared from the cooling rack faster than I could photograph it. My neighbors, who swear they “don’t do keto,” texted me the next day asking for the recipe. If you’re looking for a dessert that tastes like a York Peppermint Patty married a soft chocolate-chip cookie but wears a low-carb wedding ring, this is it.

Why This Recipe Works

Only 2.3 g net carbs per cookie thanks to almond and coconut flours plus allulose.
Cool peppermint oil delivers authentic flavor without artificial extracts.
Chopped 100 % cacao bar melts into puddles of intense chocolate that balance the mint.
Chilling the dough 30 min prevents spread and deepens the mint essence.
Soft-center, crisp-edge texture rivals any bakery cookie—keto or not.
Freezer-friendly so you can stash a dozen for emergency sweet attacks.
Egg-free option included using flax “egg” for vegan keto friends.

Ingredients You'll Need

Every ingredient in this recipe pulls double duty for flavor and texture while keeping carbs low. Let’s break them down so you know what to look for at the store—and what swaps work in a pinch.

Almond flour: Use ultra-fine blanched almond flour, not coarse almond meal, for a tender crumb. I buy it in 3-lb bags from Costco because it’s cheaper and stays fresh in the freezer for up to a year. If you’re nut-free, substitute an equal weight of sunflower-seed flour; the cookies will taste slightly earthier but still delicious.

Coconut flour: Just two tablespoons absorb the extra moisture from the butter and eggs. Don’t eyeball it—coconut flour is thirsty. If you skip it, the dough will spread into greasy puddles.

Allulose: My favorite keto sweetener for cookies because it browns and crystallizes like real sugar, giving you those crisp edges. If you only have erythritol, use ¾ cup instead of ½ cup and add 1 tsp blackstrap molasses for color; the aftertaste will be slightly cooler on the tongue.

Grass-fed butter: The beta-carotene in grass-fed butter adds a natural golden hue. If you’re dairy-free, substitute cold coconut oil or cultured ghee; both work, but coconut oil will add a faint tropical note.

Pure peppermint oil: One drop is plenty—this stuff is potent. Look for a food-grade oil (not aromatherapy) sold in tiny amber bottles. Peppermint extract works too, but you’ll need ¾ tsp and the flavor won’t be as bright.

100 % cacao chocolate: I chop a 4-oz baking bar for big melty pockets. If you prefer pre-made chips, choose a stevia-sweetened brand like Lily’s dark-chocolate chips. Milk-chocolate chips will raise the carb count, so stick to 85–100 % cacao.

Xanthan gum: Just ¼ tsp provides the chew you’d normally get from gluten. If you leave it out, the cookies will be more shortbread-like.

How to Make Keto Mint Chocolate Chip Cookies for a Fresh Treat

Brown the butter (optional but worth it)

Place the butter in a light-colored saucepan over medium heat. Swirl constantly until the milk solids turn golden brown and smell nutty—about 4 minutes. Immediately pour into a heat-proof bowl and chill 10 minutes so it’s still liquid but not hot. Browning concentrates flavor and evaporates water, giving you a richer cookie with fewer sputters in the oven.

Whisk dry ingredients

In a medium bowl combine almond flour, coconut flour, allulose, baking soda, salt, and xanthan gum. Whisk for a full 30 seconds to break up clumps; coconut flour loves to form tiny pebbles that bake into dry pockets.

Beat butter, sweetener, and egg

In a stand mixer fitted with the paddle, beat the cooled brown butter (or regular softened butter) with the allulose for 1 minute until pale and fluffy. Add the egg and beat 30 seconds more. Scrape the bowl, then add the peppermint oil and green food coloring if using. Beat just to combine.

Combine wet and dry

With the mixer on low, add the dry ingredients in two additions. Stop as soon as the last streak of flour disappears. Over-mixing activates xanthan gum and can make the cookies rubbery.

Fold in chocolate

Chop the chocolate bar into pea-sized shards and ½-inch chunks so every bite has varied texture. Fold by hand with a silicone spatula so the pieces don’t get pulverized by the mixer.

Chill 30 minutes

Cover the bowl with plastic wrap pressed directly onto the surface and refrigerate 30 minutes. Chilling solidifies the butter so the cookies don’t spread into Frisbees, and gives the mint flavor time to permeate the dough.

Portion and flatten

Preheat oven to 325 °F (165 °C) with racks in upper-middle and lower-middle positions. Line two sheet pans with parchment. Use a 1-Tbsp cookie scoop to portion 24 mounds, spacing 2 inches apart. Gently flatten each mound into a ½-inch thick disk so the centers bake through evenly.

Bake 11–13 minutes

Bake 11 minutes for soft centers, 13 for crisp edges. Rotate pans front-to-back and top-to-bottom halfway through. The cookies will look underdone—this is correct. They finish setting as they cool.

Cool completely on the pan

Let the cookies rest 10 minutes before transferring to a rack. The chocolate will still be molten and the centers fragile. Patience equals intact cookies.

Optional mint drizzle

Melt 2 oz sugar-free white chocolate with ¼ tsp coconut oil and a drop of peppermint oil. Drizzle in zig-zags and let set 5 minutes for bakery-style flair.

Expert Tips

Weigh your flours

A kitchen scale eliminates the guesswork. Almond flour packs differently cup-to-cup; 120 g per cup is the sweet spot.

Don’t over-color

A single drop of green food coloring looks natural; more and your cookies resemble St. Patrick’s Day novelty food.

Use oil, not extract

Peppermint oil is 4× stronger than extract. If you only have extract, start with ¼ tsp and add drop by drop.

Freeze dough balls

Scoop, freeze on a sheet pan, then bag. Bake from frozen, adding 2 extra minutes—fresh cookies on demand.

Crisp trick

Swap 2 Tbsp almond flour for 2 Tbsp whey protein isolate for extra-crisp edges.

Mint chip upgrade

Add ⅛ tsp spirulina powder for natural green color plus a subtle grassy note that pairs with mint.

Variations to Try

Double-mint: Replace half the peppermint oil with spearmint oil and press a fresh mint leaf on top of each cookie before baking.
Orange-mint: Add ¼ tsp orange zest to the dough and use orange-flavored 90 % cacao chocolate.
Coconut-mint: Swap 2 Tbsp almond flour for shredded unsweetened coconut toasted until golden.
Vegan keto: Use flax egg (1 Tbsp ground flax + 3 Tbsp water) and coconut oil in place of butter.
Thin-mint: Roll dough ¼-inch thick between parchment, chill, then cut with a 2-inch cutter; bake 8 minutes.
Mocha-mint: Dissolve 1 tsp instant espresso powder in ½ tsp hot water and add with the egg.

Storage Tips

Room temp: Store cooled cookies in an airtight tin with a small square of parchment between layers for up to 5 days. Add a quarter of a paper towel to absorb excess moisture so they stay crisp.

Refrigerator: Because these are high in healthy fats, they firm up beautifully in the fridge. Place in a zip bag with as much air removed as possible; they’ll keep 2 weeks and taste like thin mints straight from the sleeve.

Freezer: Freeze baked cookies on a sheet pan, then transfer to a freezer bag with parchment dividers. Thaw 10 minutes at room temp or give them 30 seconds in the microwave for a just-baked gooey center. Frozen dough balls keep 3 months; bake from frozen at 300 °F for 13–15 minutes.

Make-ahead lunchbox packs: Wrap two cookies back-to-back in plastic, then foil, and freeze in snack-sized bags. Grab a pack on the way to work; they’ll thaw by coffee break.

Frequently Asked Questions

Yes—use ¾ tsp peppermint extract in place of 1 drop oil. Add it with the egg so the alcohol cooks off and leaves pure mint flavor.

Most likely the butter was too warm when mixed or the dough wasn’t chilled. Next time refrigerate 45 minutes and bake on a cool sheet pan.

No—coconut flour is 4× more absorbent. You’d need to reformulate the entire recipe. Use sunflower-seed flour for a nut-free 1:1 swap.

Gently tap the pan on the counter right after baking; the surface will crackle as the cookies settle. A light dusting of powdered allulose once cool adds bakery-style cracks.

Always consult your doctor, but each cookie contains only 2.3 g net carbs and uses allulose, which has negligible glycemic impact.

Absolutely. Double every ingredient and use a 5-qt stand mixer. Chill dough in two bowls so it cools evenly.

Keto Mint Chocolate Chip Cookies for a Fresh Treat

Why This Recipe Works

Ingredients You'll Need