Key Lime Bundt Cake

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Key Lime Bundt Cake is delicious! This recipe made with a box of cake mix and a package of instant pudding. It’s a mixture of tangy citrus and soft, sweet cake.

I’m a fan of anything with key lime. It’s like taking a big bite of spring and summer. If you’re a fan, too, I betcha you’ll go nuts for these mouthwatering Key Lime Bars. If you’re in a big hurry, whip up a sweet Key Lime Cheesecake Dip. You never have to wonder what you’re taking to pot luck when you have the ingredients for these treats.

Key Lime Bundt Cake

Key Lime Bundt Cake

Did you know that key limes are somewhat different than regular limes? Key limes have a stronger smell, they are a bit more tart, and they don’t have as much juice as regular limes.

When I am using key limes in a recipe, I first microwave them to make them softer so I can more easily extract the juice. Pop them in for about 30 seconds or so and then roll them around on the counter using even pressure from your hands.

Juicing a key lime is not easy. I’m not going to lie to you. What doesn’t work well is to use your hands to try and squeeze the juice out of them. It’s too hard!

You can definitely buy the juice so that you don’t have to try and work with the limes. There is no shame in that game. But, like most things, the “real” tastes better than the stuff you get in the bottle. (That’s just my opinion.)

Key Lime Bundt Cake

Once you’ve microwaved and rolled, cut it in half and use a fork to juice it. Stick the fork in the lime and twist, twist, twist over a bowl. You’ll get some pulp, but that can be easily removed. I’d pick up 6 or 7  key limes to get the right amount of juice for this recipe, although depending on the fruit you pick, you might need more.

And yes, you can buy regular limes that are a little bit easier to work with and use those. It’ll taste a smidge less flavorful, but you can be the judge as to whether you mind that trade-off.

Cream Cheese Frosting

There is no way I can even mention cream cheese frosting without telling you how much I love it! I am such a cream cheese fan, it’s ridiculous. Are you?

Before you make this recipe, take the cream cheese out of the refrigerator and let it sit until it’s softer. Hard, cold cream cheese won’t work.

Key Lime Bundt Cake

Here is the printable recipe. Enjoy!

Key Lime Bundt Cake
5 from 32 votes

Key Lime Bundt Cake

Key Lime Bundt Cake is delicious! This recipe made with a box of cake mix and a package of instant pudding. It's a mixture of tangy citrus and soft, sweet cake.
Servings: 10
Prep: 15 minutes
Cook: 35 minutes
Total: 50 minutes



  • 1 15.25 oz box white cake mix
  • 1 3.4 oz box instant vanilla pudding
  • 4 large eggs
  • 1/2 C sour cream
  • 1/2 C sugar
  • 3/4 C canola oil
  • 3/4 C key lime juice
  • 1 tsp pure vanilla extract
  • 3 drops leaf green food color
  • 1 9 inch bundt cake

Cream cheese frosting

  • 12 ounces cream cheese softened
  • 4 C powdered sugar
  • 1 tsp pure vanilla extract
  • 1/4 tsp kosher salt
  • 1 large piping bag with round tip
  • Zest of key limes to garnish



  • Preheat oven to 350 degrees and spray your bundt pan with baking spray, set aside
  • Using a standing mixer, combine cake mix, pudding, eggs, sour cream, sugar, oil, key lime juice and vanilla and beat until combined
  • Mix in the green gel food coloring until combined
  • Pour into a bundt pan and bake in the oven for 35-45 minutes or until a toothpick comes out clean when poking the center
  • Allow to cool completely on the counter before removing from the pan


  • Combine all ingredients in your standing mixer and beat on high until smooth.
  • Spoon frosting into a piping bag and pipe the frosting over the top.
  • Sprinkle with key lime zest if desired

Last Step:

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Calories: 766kcal | Carbohydrates: 111g | Protein: 7g | Fat: 34g | Saturated Fat: 11g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 15g | Trans Fat: 0.3g | Cholesterol: 107mg | Sodium: 593mg | Potassium: 138mg | Fiber: 1g | Sugar: 88g | Vitamin A: 633IU | Vitamin C: 6mg | Calcium: 159mg | Iron: 1mg


Key Lime Bundt Cake