3 Ingredient Key Lime Cookies

These might be the easiest cookies we’ve ever made. With summer here, light and fruity flavors are everywhere, and Key Lime is one of many we enjoy. These cookies are Brett-proof. They are so simple.

3-ingredient key lime cookies
3 Ingredient Key Lime Cookies Ingredients

1 box Pillsbury Key Lime Cake Mix

2 Eggs

½ cup vegetable oil

Stir ingredients together. The batter will be pretty thick. Shape into balls. We do smaller cookies, you may want bigger. Bake at 350 for 9 minutes.

Frost immediately for “pooled” frosting that melts onto the cookie, wait until cool for a more decorative look.

I’ll be sharing a fun twist on this recipe to make Key Lime Cheescake Cookies later in the week!

Pillsbury also has Pink Lemonade and Creamsicle flavors for summer that would also make delicious cookie!

The frosting used is the Pillsbury Key Lime Frosting! Super simple!

This recipe is GREAT for kids. It’s easy, the dough is workable for little hands, and not a lot of measuring. Easy way to get kids helping in the kitchen. We have been bringing these to cookouts and picnics for a while now- they are just enough “different” to wow people but simple enough that they are mixed, shaped, baked and cooled in under an hour so you don’t need to set aside a lot of time to make them.

3 Ingredient Key Lime Cookies
Recipe Type: Cookies
Cuisine: American
Author: Brett
Prep time:
Cook time:
Total time:
Serves: 12
Super easy 3 ingredient Key Lime Cookies
  • 1 box Pillsbury Key Lime Cake Mix
  • 2 Eggs
  • ½ cup vegetable oil
  1. Stir ingredients together. The batter will be pretty thick. Shape into balls.
  2. Bake at 350 for 9 minutes.


About the author: I’m a 30-something mom to three, brand ambassador. content creator, social media maven, blogger extraordinaire, earth lover, butcher, baker, candlestick maker (or something along those lines) – love word games, crafting, cake decorating or shooting pictures.

24 comments… add one
  • Wouldn't this recipe work with ANY Pillsbury cake mix?
  • I want to make these with dried cranberries for cookie exchange but the mix is not available in Dec. I looked at options of using lemon cake mix and a lime jello pack. Do you think it would work? I have to make 6 dozen.
    • I bet that would work out ok- love the cranberry idea. I have seen it at random times in places like Target too this time of year
  • this looks so delicious
  • Sounds yummy! Stumbled and pinned.
  • wow so easy n yummy..
  • It sounds so simple! I have to try it and at least see what it tastes like!
  • wow nice.. thank you..
  • Love key lime pie. I'll need to try these. I've made something similar with lemon, but these sound better!
  • i love anything easy and these look great, especially for summertime. thanks
  • These are the kind of recipes I like! Three ingredients, easy peacy to make and delicious - I just love key lime. Thanks you for sharing.
  • I never had a key lime cookie before.
  • these sound so easy and yummy! I think I can actually make these myself!
  • Thanks for sharing! They look super easy to make. I love key lime and so does my brother-in-law. I might just have to make these cookies for our 4th of July family gathering.
  • Wow, just 3 ingredients! I love key lime, so I've gotta try this! Thanks for the recipe!
  • I didn't even know Pillsbury made Key Lime mix!!! I'm all over that!
  • Tomorrow I'm off to the store to buy some Pillsbury Key Lime Cake Mix to make these. (and maybe a small lime to put some zest in the cookies.) Yes, what frosting do you use?
    • Pillsbury Key Lime Frosting :) The Zest would be awesome for sure!! I'd put a little of the juice in too
  • What's the frosting recipe?
    • Oh shoot! I forgot! It's just the Pillsbury Key Lime Frosting!
  • Brett ~ how do you store these? Thanks!! I really want to make them!
    • In a really airtight container. I have some Rubbermaid containers that seal really well. Though they don't end up saving for long. People eat them.

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