
This creamy Key Lime Pie Smoothie gives you all the punchy lime flavor of the classic dessert, but it's way better for you. Great if you want something light and cool, whether it's breakfast time or you just feel like having a zippy snack that won't weigh you down.
This blend became my go-to when summer was especially hot and I was craving treats without being heavy. After early workouts, my friends always ask me for this because it tastes like a splurge and still leaves us full of energy.
Tasty Ingredients
- Lime wedge: totally optional but looks awesome on top and makes the drink smell fresh
- Crushed graham cracker crumbs: dusty pie-like crunch for rimming the glass, grab whole grain or gluten free if you like
- Fresh spinach leaves: want it greener? Throw some crisp organic leaves in, they won't change the flavor
- Ice: optional for extra chill and thicker texture
- Vanilla extract: brings a little cozy, dessert-style vibe, real vanilla works best
- Finely grated lime zest: don't miss this—it lifts the lime taste, go for thin-skinned, fragrant limes
- Honey: just enough to sweeten and mellow out the sharpness, swap for agave or maple syrup if you're plant-based
- Key lime juice: the zingy difference-maker, regular lime is fine but key lime pops even more
- Plain Greek yogurt: brings velvety thickness and a boost of protein, full fat is creamier or use dairy free yogurt
- Frozen banana: sweetens it up and makes it super creamy, pick ripe bananas for best flavor
Simple How-To
- Serve it up:
- Pour that blended goodness into your rimmed glass, drop a lime wedge on if you want, and sip right away for max creaminess
- Get your glass ready:
- Wipe the rim of your glass with lime juice, then spin it in graham crumbs so they stick all around
- Pick your texture:
- Toss in handfuls of ice little by little and blend each time—thicker calls for more ice, less makes it sippable
- Blend everything:
- Load the frozen banana pieces, Greek yogurt, juice from key limes, honey, zest, and vanilla into the blender, add spinach if you want it bright green, and blend on high till totally smooth. Scrape down the sides if you have to

I always include lime zest—it makes all the difference. Once I forgot it, and the flavor just tanked. It’s the game-changer for getting that bright pie flavor my family flips for every time.
Smart Storage
Leftover smoothie? Pop it into ice trays and freeze. For another round, toss those cubes into your blender with a splash of milk and mix it up again within three months. The texture stays rich and thick, not watery at all.
Switch-Ups
Not into Greek yogurt? Any thick yogurt or even soft tofu will work for a planty version. No limes around? Lemons fill in pretty well. If you're feeling extra, use a bit of cream cheese instead of a couple spoons of yogurt for a true pie-like feel.

Fun Ways to Enjoy
Serve it in a fancy glass, cover the rim with graham crumbs, and add a twist of lime for brunch. Or, for the kids, pour it in popsicle molds—give it a bit more honey—and freeze for a snack they’ll love.
Recipe FAQs
- → What can I do to make my smoothie super smooth?
Try swapping a couple of tablespoons of Greek yogurt with some cream cheese before blending. That'll make it extra silky and pie-like.
- → Is it fine to use regular limes if I don’t have key limes?
Yep, regular lime juice and zest will give you the same tangy punch and brightness as key limes.
- → If I’m out of honey, what should I use?
You can go with agave, maple syrup, or your usual go-to sweetener. Pick whatever fits you best.
- → How do I make the smoothie look greener but not weird in taste?
Just throw in a handful of spinach leaves before you blend. It looks awesome and doesn’t change the flavor one bit.
- → Got any creative ways to serve this?
Pour it into a glass with graham cracker crumb edges. Then pop on a wedge of lime to make it feel special.
- → What’s the best way to keep leftovers for later?
Freeze any smoothie you don’t drink in ice trays. When you want it later, blend the cubes with a dash of milk or yogurt—good for three months!