Guacamole by the spoonful turned into a salad. This keto avocado cucumber salad is creamy, cool, and just 3.3g net carbs. Ten minutes, one bowl, and a cilantro-lemon dressing that makes it a proper side.
I started making this avocado cucumber salad because I kept eating guacamole straight from the bowl with a spoon. No chips, no veggies to dip, just a spoon and a shameless lack of self-control. At some point I figured if I was going to eat avocado like a salad, I might as well make it one.
The concept is simple. Ripe avocado, cool cucumber, red onion, tomato, and a cilantro-lemon dressing that ties everything together. What makes this different from a basic side salad is the ratio. I use two full avocados to one cucumber, so every bite is creamy with just enough crunch to keep it interesting. The dressing is light (olive oil, fresh lemon juice, garlic, oregano, red pepper flakes, and salt) because the avocado brings the richness on its own.
I make this year-round, but it really shines as a keto BBQ side when everyone else is loading up on potato salad and corn on the cob. It pairs well with anything off the grill. I’ve served it next to bacon wrapped asparagus kebabs and alongside grilled vegetables, and both times it was the first dish emptied. The cilantro-lemon dressing cuts through heavier grilled meats without competing, which is why I keep coming back to it.
The whole thing comes together in about ten minutes. Beth, one of my readers, told me she’s made it three times in two weeks because she keeps all the ingredients on hand now. I get that. Once you have the rhythm down, there’s nothing faster for a fresh, filling side. Chop, toss, drizzle, done.
If you’re stuck in the same keto salad rotation, this breaks the pattern. It’s not a leafy green situation. It’s chunky, creamy, and substantial enough to work as a light lunch on its own. I’ll sometimes throw in crumbled feta or swap the lemon for lime, and both variations hold up. A handful of diced bell pepper works too if you want more color.
One thing I’ve learned after making this dozens of times: don’t dice the avocado too small. You want chunky pieces that hold their shape when you toss everything together. If you cut them too fine, the dressing turns the whole bowl into mush. Quarter-inch cubes at minimum. The cucumber slices can be thinner since they’re there for crunch, not structure.
How I Pick a Ripe Avocado
Pick an avocado that feels firm but gives a little when you squeeze it. Squishy means it is past its prime, and rock hard means it needs more time (you can still buy it and use it later). Ripe skin is a dark, almost blackish green. My favorite check is to pop off the stem: bright green underneath means it is ready, brown means it is overripe and likely brown inside.
How to Make It Spicier
This salad already calls for ¼ teaspoon of red pepper flakes, so bump that up if you want more heat. I sometimes go to a half teaspoon, or dice half a jalapeno right into the mix. Leave the seeds in for real heat or take them out for a warm kick. Cayenne pepper or Tabasco sauce work too.
Prepare your vegetables and fruit. Chop up avocado, dice onion, slice cucumber, rough chop the cilantro.
2
Unite them all
Add to a serving bowl.
3
Whisk dressing
Combine the ingredients for the dressing: olive oil, lemon juice, garlic, red pepper flakes, oregano and salt. Mix well.
4
Pour it on
Drizzle the dressing over the salad.
5
Toss
Mix until evenly coated.
Nutrition
Per serving: 1/8 of recipe
Calories
132
Fat
12.1g
Protein
1.3g
Total carbs
6.3g
Net carbs
3.3g
Nutrition is an estimate calculated from the ingredients listed. Brands vary, so check labels if you track closely.
Frequently Asked Questions
Can I make this salad ahead of time?
Yes, with one rule: the avocado goes in last. I prep the cucumber, onion, tomato, and dressing up to a day ahead and keep them separate in the fridge, then cut and toss in the avocado right before serving. Squeezing extra lemon juice over the avocado pieces buys some time, but the texture changes after a few hours no matter what. For leftovers, I press plastic wrap right against the surface of the salad (not just over the bowl) and refrigerate. It keeps for about a day. Storing the dressing separately and tossing fresh avocado into the leftover cucumber mixture the next day works even better.
What can I substitute for cilantro?
I know cilantro is a love-it-or-hate-it herb. When I make this for friends who can't stand it, I swap in fresh flat-leaf parsley and it works just fine. The dressing still carries enough garlic and lemon to hold the flavor together. Fresh dill is another option I've tried. If you do love cilantro, try doubling it and serving this next to my keto cilantro lime cauliflower rice for a cilantro-heavy spread.
Can I add feta cheese to this salad?
I add crumbled feta to this all the time. About a quarter cup scattered on top after tossing. The salt from the feta means I back off the salt in the dressing a bit, so taste before you season. It adds a tangy bite that plays off the creamy avocado. If you like the feta angle, my lemon garlic kale salad uses a similar pairing.
Do I need to peel or seed the cucumber?
Depends on the cucumber. Regular cucumbers have thicker skin and more seeds, so I peel them and scoop out the seeds with a spoon before slicing. English cucumbers skip both steps, which is why I usually grab one. Seeding matters most if the salad will sit out, since cucumber seeds hold a lot of water and can pool at the bottom of the bowl.
If you want to make this THE BEST SALAD YOU’VE EVER HAD pickled the cucumbers before hand:
▢ 1 cup water
▢ 1/3 cup vinegar, (apple cider, white, and rice wine are all good! I use apple cider vinegar)
▢ 2 tablespoons monk fruit sugar
▢ 1 to 2 teaspoons salt
▢ sliced garden cucumbers
Rest it for 10 minutes after you add the dressing. The avocado soaks into the lemon and oil and becomes something different from a salad that just has avocado on top. I’ve made other cucumber salads that needed rescuing with extra acid or salt. This one doesn’t. The oregano does real work here, and the red pepper flakes keep it from going flat. Lemon instead of lime. Most people reach for lime with avocado, but this is better.
Sunday I put a big batch of this together with whatever else I’m prepping and the one thing I worked out is that if you press plastic wrap right down against the cut avocado before you seal the container, it stays green through at least Wednesday, and by then the dressing has had a couple days to get into everything and it’s actually better than when you first make it. Garlic could be a little bolder for my taste but it’s been my standard Tuesday and Wednesday lunch for a month now.
Three cloves next batch, and I press the garlic through a microplane when I want it louder. The plastic wrap flush against the surface is exactly what I do too.
Pick avocados that give a little when you press them. Not mushy, just soft enough. I bought ones that were too firm the first time and the dressing slid right off instead of coating them. Let them sit on the counter a day if they’re not ready.
3.3 surprised me too the first time I worked it out. Two avocados in there and still under 4 grams net. The fat from the avocado and olive oil makes it actually filling, so I’ll eat a big bowl and call it dinner. I track loosely now but I remember when every number needed to be verified three times before I felt okay eating anything. Stuff like this is what got me through that phase.
My daughter picks avocado out of everything and she ate the whole bowl without a word. I think it was the lemon dressing with the red pepper flakes that got her.
Made this as a side for Sunday dinner and my husband, who normally won’t touch anything with avocado, went back for more and then asked what was in the dressing. The lemon and garlic is doing all the work there. I’d go 5 stars but I dialed back the red pepper flakes for him, so landing at 4.
The avocado skeptic asking about the dressing is basically the win condition for this recipe. Half the red pepper flakes still comes through, just without the heat.
The cilantro-lemon dressing did something to me. I’ve been eating sad salads for months. This is actual food, the kind I used to throw together before keto, and it just fits without any weird substitutions. That got to me.
Been avoiding salads that feel like sad diet food for months, but the cilantro-lemon dressing here reminded me why I actually love eating this way. Made it in five minutes on a Tuesday and felt genuinely good about dinner for the first time in a while.
Tuesday salads shouldn’t feel like punishment. The lemon is what does it, keeps everything from going flat and heavy. I make that dressing on its own sometimes and just drizzle it over whatever’s in the fridge.
My husband grabbed a chip and went in before I could warn him. He figured it out fast but finished it anyway. The lemon dressing makes it lighter than guacamole but you still get that creamy avocado thing. Going in the spring rotation.
Made this Sunday expecting it to last maybe a day before the avocado went brown. Still looked fresh on Wednesday. If you’re meal prepping, the lemon dressing holds it better than you’d think.
