
Bring a burst of the islands to your day in less than five minutes with this cool, zesty key lime drink. I love whipping it up for a quick breakfast or a fuss-free dessert. It’s creamy, bright, and odds are you’ve got everything you need. Just frozen banana, a bit of lime, and a touch of honey come together for a tangy sip you’ll crave. The first time I made it, the heat was brutal, and now it’s my top pick for beating the summer sun.
When I first blended this, I just wanted a fun snack that wouldn’t make me sluggish. Since then, I always keep frozen bananas handy. It’s my go-to chilly treat for hot days when I need a pick-me-up without feeling heavy.
Lively Ingredients
- Frozen banana: Makes things thick and naturally sweet—grab those super ripe ones for best flavor, then freeze
- Plain Greek yogurt or thick non-dairy yogurt: Boosts protein and gives a creamy, almost pie-like bite—choose low-sugar versions
- Fresh key lime juice or the regular kind: You’ll want the zing of just-squeezed limes for max freshness
- Honey or your top sweetener: Pick your favorite, go local if you can, and tweak for the perfect sweetness
- Finely grated lime zest: Big punch of lime! Try to snag unwaxed limes, makes zesting way nicer
- Pure vanilla extract: Rounds out the flavors—real is always better if you’ve got it, but use what’s handy
- Optional ice: More ice means a thicker, frostier drink—add if you like extra chill
- Optional spinach: A handful gives it a green color but not much taste—just rinse first
- Optional toppings: Top with crushed cookies (gluten-free if needed) and a slice of lime for a treat
Simple Steps
- Get Ready:
- Chop your banana and freeze several hours ahead so it’s plenty cold. Zest and juice your limes right before so you get that fresh scent and juice.
- Blend Everything:
- Throw banana, yogurt, lime juice, honey, zest, vanilla, and ice (if you like) in the blender. Now’s the time for spinach if you want it. Blend until silky, scraping sides if needed.
- Check the Taste:
- Take a sip. Too tart? Squeeze in a tad more lime. Not sweet enough? Drizzle in more honey or use maple. If it’s too thick, just add a splash of non-dairy milk or water and blend again.
- Dress It Up and Sip:
- If you wanna make it special, run lime juice on the rim and dip it in crushed cookie crumbs. Pour in your smoothie, sprinkle on zest, or stick a lime wedge on too. Drink right away!

Worth Noting
- Leftovers? Freeze in popsicle molds and enjoy later
- You’ll get a dose of fiber, plenty of vitamin C, and potassium
- Easily stays gluten-free or dairy-free—just use your favorite yogurt swap
The lime zest? That’s my favorite part. It floods me with memories of family picnics and fighting over the last piece of that classic citrus pie. All that bold lime zing just feels like pure summer and hanging out with people I love.

Best Way to Keep
It’s at its best straight from the blender, but extra batches freeze real easy. Pour in ice cube trays, pop them in the freezer, and when you’re ready later, just add the cubes to a blender with a bit of milk for a quick treat. They’ll hold up perfectly for three months when sealed up—handy if you’ve got lots of limes or bananas to use.
Switch Ups
Can’t find key limes? Grab regular limes or even a lemon. Swap out Greek yogurt for coconut or cashew options to skip the dairy. Agave or maple slip in fine for honey. Like nutty? Add some cashew butter for a twist.
Fun to Serve
Pour in a chilled glass, add coconut whip and some crushed cookies and you’ve got a dessert in minutes. Kids love making smoothie bowls with toppings like fruit and granola. You can even freeze the mix into popsicles for sunny afternoons.
Glass Full of Sunshine
This one came from Florida trips where we’d always hunt down those tangy pies by the water. All that zip and citrus just makes me think of sandy legs and chill lunches outdoors. Now you can bring a little sun to the breakfast table any day.
Common Questions
- → How do I get that extra green color?
Just blend in some spinach. You won't taste it but it'll make the color pop.
- → What if I don't have Greek yogurt?
Use plain yogurt or any dairy-free option for that creamy vibe.
- → How do I make it sweeter?
Add a little more honey or any sweetener you like to crank up the sweetness.
- → Can I go with regular limes instead of key limes?
Yep! Regular limes totally work—they bring the same punchy citrus hit.
- → Leftovers—what's the best way to save them?
Freeze leftover smoothie in an ice cube tray. Later, toss cubes in the blender with some milk. They last fine in the freezer for around three months.
- → Is this good for people who steer clear of dairy?
Absolutely! Just grab your favorite dairy-free or plant-based yogurt.