Homemade Thin Mints That Taste Better Than the Box

Homemade thin mints come together with a simple cocoa shortbread base, a quick dip in peppermint-spiked dark chocolate, and about an hour of your time. No waiting for cookie season, no $6 boxes, and honestly, the flavor is better because you control the mint intensity and chocolate quality.

This recipe makes about 40 cookies, they keep well in the freezer, and the process is genuinely straightforward. Even if you're not a regular baker, this one is very doable.

What You Need

For the chocolate coating: 12 oz dark chocolate chips or chopped dark chocolate (60-70% cacao) 1 tablespoon coconut oil 1 teaspoon peppermint extract (not mint extract, peppermint is sharper and cleaner)

The peppermint extract measurement sounds small, but it's potent. Start with 3/4 teaspoon if you're sensitive to mint, taste the melted chocolate before dipping, and adjust from there.

Making the Cookie Dough

Beat the butter and powdered sugar together until smooth and pale, about 2 minutes with a hand mixer. Add the egg yolk, vanilla, and cream, then mix until combined.

Whisk the flour, cocoa, salt, and baking powder together in a separate bowl, then add it to the butter mixture and mix on low until a soft dough forms. It will look crumbly at first. Keep mixing and it will come together.

Turn the dough out and divide it in half. Roll each half into a log about 1.5 inches in diameter, wrap tightly in plastic wrap, and refrigerate for at least one hour. Cold dough slices cleanly and holds its shape during baking, which matters for getting that uniform thin mint look.

You can also refrigerate overnight, or freeze the logs for up to three months and bake them straight from the freezer with an extra minute of bake time.

Baking the Cookies

Preheat your oven to 350°F and line two baking sheets with parchment paper.

Slice the chilled logs into rounds about 1/4 inch thick. Thinner than you think. These should be genuinely thin, not shortbread-thick. If they're uneven, they'll bake unevenly, so take your time with the slicing.

Arrange on the prepared baking sheets with a little space between each, then bake for 10 to 12 minutes. The cookies will look soft when they come out of the oven. That's fine. They firm up completely as they cool, and if you overbake them chasing that firm texture, they'll taste bitter.

Let them cool on the pan for 5 minutes, then transfer to a wire rack to cool completely before dipping. Any warmth at all will make the chocolate coating seize and look streaky.

The Chocolate Dipping Process

This step makes or breaks the cookie, so go slow.

Melt the chocolate and coconut oil together in a heatproof bowl set over a pot of barely simmering water, stirring frequently. The coconut oil thins the chocolate just enough to coat the cookies smoothly without being too thick. Once everything is melted and glossy, remove from heat, stir in the peppermint extract, and let it cool for about 5 minutes before dipping.

Line a baking sheet with parchment or wax paper. Drop a cookie into the chocolate, turn it with a fork, then lift it out and tap the fork gently against the edge of the bowl to let the excess drip off. Slide it onto the lined baking sheet.

Work in batches and reheat the chocolate briefly if it thickens too much. A thin, even coat is what you want. A thick coat tastes heavy and tends to crack when you bite in.

Once all the cookies are dipped, slide the sheet into the refrigerator for 20 minutes until the coating sets firm.

Storage and Freezing

Room temperature works for up to a week in an airtight container, but these taste noticeably better cold. The chocolate gets snappy and the peppermint flavor sharpens.

For longer storage, layer them between sheets of parchment in a freezer-safe container and freeze for up to three months. Eat them straight from the freezer. Honestly, frozen thin mints are the whole point. That's the real Girl Scout experience.

A Few Swaps and Variations

If you want a gluten-free version, a cup-for-cup gluten-free flour blend works well here since the dough relies more on butter and cocoa for structure than on gluten development.

White chocolate dipped with peppermint is a fun variation for holiday gifting. The mint flavor pops differently against white chocolate, more floral and sweet.

For a darker, more intense cocoa flavor, swap two tablespoons of the flour for an extra two tablespoons of black cocoa powder. It's what gives Oreos their dramatic color and slightly bitter edge, and it makes these taste even more like the original.

If you want to package these as gifts, stack them in a clear cellophane bag tied with a ribbon. They look polished and they hold up well for a few days at room temperature, making them a good option for cookie boxes and holiday swaps.

Frequently Asked Questions