Key Lime Meltaway Cookies

I’ve been making waffles and pizza for dinner. I’ve been making waffles sandwiches for lunch and drinking beers in the backyard after work. I’ve had key lime cookies in my oven and powdered sugar on my outfit.

What I love about these cookies is that they aren’t too sweet. They’re perfectly zesty. And you can make these in the morning and deliver them to your favorites before noon. (I’m a morning person who wakes up with cookies on her mind.)

And don’t worry, these guys live up to their name. They truly melt in your mouth. Thank goodness. I’d hate to eat lying cookies.

Key Lime Meltaway Cookies {makes about 2 1/2 dozen}
Recipe adapted from Martha Stewart via Smitten Kitchen


  • 6 T unsalted butter, at room temperature
  • 2 1/2 T + 2/3 cup powdered sugar, divided
  • zest of 2 key limes
  • 1 T freshly squeezed lime juice
  • 1 1/2 t vanilla extract
  • 1 cup minus 1 T all-purpose flour
  • 1 T cornstarch
  • big pinch of kosher salt


  1. Using an electric mixer, beat together the butter and 2 1/2 tablespoons powdered sugar. Add the zest, juice, and vanilla. Beat until combined.
  2. In another bowl, whisk together the flour, cornstarch and salt. Add to the buttery ingredients and mix with your electric mixer until a dough forms.
  3. Place dough on an 8×12 inch-ish sized piece of parchment paper and roll into a log about 1 1/4 inch in diameter. Chill at least one hour, or for 30 minutes in the fridge and then 10 in the freezer.
  4. Preheat your oven to 350F, and line two baking sheets wit parchment paper. Slice dough into 1/4-inch rounds and place on the prepared baking sheets about an inch apart.
  5. Bake until barely golden, about 12 minutes. Transfer cookies to a wire rack. Place the remaining 2/3 cup powdered sugar in a sealed bag. Cool the cookies for 5 minutes, and while they’re still warm place cookies the sugar-filled bag and toss to coat. Bake remaining dough. Store cookies in an airtight container for up to 2 weeks. Rumor has it they get even lime-ier tasting the longer you have them.

Yay! Click HERE for a printable pdf of the recipe above.

Sliced and ready to bake. Feel free to sample at this point.

16 thoughts on “Key Lime Meltaway Cookies”

  1. Holy jesus that’s a big bag of limes. That would cost a fortune over my ways. These cookies look dreamy. It’ll probably cost me $6 for one small not very nice lime but I’ll give them a go anyway …

  2. Lyin’ cookies are the worst! Waffles and backyard beers are the best though! Good thing these cookies are honest b/c they sound amazing!

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