Sauces & Condiments
This easy apple cucumber relish recipe transforms simple ingredients into a bright, tangy condiment that adds crunch and freshness to sandwiches in just 20 minutes. The secret lies in balancing crisp apple and cucumber with vinegar and sugar for a perfect sweet-tart flavor that keeps well for weeks.
I developed this recipe after realizing how versatile a quick-pickled relish could be—far beyond traditional sweet or dill-based versions.
The process is straightforward: thinly slice the vegetables, toss them with vinegar, sugar, and a pinch of salt, then let the flavors meld for at least 30 minutes before serving.
No peeling required for the cucumbers (just scrub and slice), and the apples add natural sweetness that complements the vinegar’s tang. This relish works as a sandwich spread, charcuterie board topping, or even a refreshing side for grilled meats.
What makes this recipe truly quick is the minimal prep—no cooking required, just chopping and waiting. The texture stays crisp and vibrant, with just enough liquid to coat each bite. Store it in the fridge for up to 2 weeks, and the flavors will deepen over time.
Perfect for meal prep, this relish turns basic dishes into something special with almost no effort.
Pair it with deli meats, cheese boards, or even as a tangy topping for tacos. The balance of sweet and sour makes it addictive—once you try it, you’ll want to make it every time. Let’s get started!
Ingredients for apple cucumber relish recipe easy
Eight simple ingredients create this bright, tangy relish in minutes—no cooking required.
| Ingredient | Amount | Notes |
|---|---|---|
| Granny Smith Apples 🍎 | 1 ½ cups | Thinly sliced, seeds removed |
| Persian Cucumbers 🥒 | 1 ½ cups | Thinly sliced, peeled if preferred |
| White Vinegar 💧 | ½ cup | Distilled white vinegar preferred |
| Granulated Sugar 🍚 | ½ cup | White or raw sugar works |
| Diamond Crystal Kosher Salt 🧂 | 1 ½ tsp | Adjust to taste |
| Fresh Dill Weeds 🌿 | ¼ cup | Chopped, optional for freshness |
| Yellow Onion 🧅 | ¼ cup | Thinly sliced, optional for depth |
| Extra-Virgin Olive Oil 🫒 | 1 tbsp | For glossy finish, optional |
The apples and cucumbers are the stars, so choose firm, crisp varieties. Granny Smith apples hold their shape best, while Persian cucumbers stay crunchy longer—avoid seedless types. For vinegar, distilled white is ideal, but apple cider vinegar adds subtle sweetness. Sugar should dissolve completely; stir well if using raw sugar. Diamond Crystal kosher salt dissolves faster than table salt, so measure carefully. Fresh dill adds brightness, but dried works at one-third the amount if needed. Thinly slice everything—mandoline slicer makes this step effortless.
No Granny Smith apples? Fuji or Honeycrisp work in a pinch, but expect slightly softer texture. Skip the cucumbers? Red bell pepper or jicama adds crunch without peeling. Vinegar substitute? Lemon juice at half the amount works for a brighter flavor. Sugar-free? Use maple syrup or agave, but reduce by 25% since they're thicker. Onion lovers can double the amount—it caramelizes slightly in the vinegar. For extra tang, add 1 tsp mustard seeds or 1/4 tsp red pepper flakes. The olive oil is optional but adds a silky finish.
This relish stays crisp for 2 weeks in the fridge—taste improves after 24 hours. Store in an airtight container with a lid slightly loose to allow gases to escape. For meal prep, portion into small jars or containers. The flavors intensify over time, so make extra. Freeze for up to 3 months if needed, though texture may soften slightly. Always use clean utensils when serving to maintain freshness.
Why You'll Love This Recipe
- I’ll be real: this comes together while you’re waiting for the kettle to boil. Dice Granny Smiths and Persian cucumbers into even chunks—no fancy techniques, just a sharp knife and a steady hand. The vinegar and sugar do the rest while you sip your tea.
- No Fuss Assembly: I’ll be real: this comes together while you’re waiting for the kettle to boil. Dice Granny Smiths and Persian cucumbers into even chunks—no fancy techniques, just a sharp knife and a steady hand. The vinegar and sugar do the rest while you sip your tea.
- Tart-Sweet Magic: That first bite? Crisp Granny Smiths cut through the creamy cucumber, and the vinegar-sugar brine? It’s like a bright, refreshing hug. Honestly, the salt makes it sing—Diamond Crystal’s kosher salt dissolves just enough to balance without overpowering.
- Picnic to Potluck: Slather it on sandwiches, toss it in tacos, or serve it straight with chips. My kids grab it for lunchboxes, and I sneak it into charcuterie boards when company’s over. It’s the one thing that never feels out of place.
Step-by-step instructions for apple cucumber relish
This refreshing relish comes together in under 20 minutes with minimal effort.
Prepare the Vegetables
Start by thinly slicing the 1.5 cups Granny Smith Apples using a mandoline or sharp knife. Remove any seeds and cut the slices into even ¼-inch strips. For the 1.5 cups Persian Cucumbers, peel if preferred, then slice lengthwise into thin half-moons. The goal is uniform slices that will soften evenly during the pickling process.
Next, thinly slice the 0.25 cup Yellow Onion into half-moons and finely chop the 0.25 cup Fresh Dill Weeds. Set all prepared vegetables aside - you'll combine them in the next step. The onions will add subtle sweetness while the dill brings bright freshness that balances the tartness of the vinegar.
Combine Ingredients in a Bowl
In a large mixing bowl, combine the sliced apples, cucumbers, onions, and chopped dill. Gently stir to distribute everything evenly. The vegetables should look vibrant with the crisp green dill peeking through. This is where the magic begins - the fresh flavors will meld beautifully during the quick pickling process.
In a separate small bowl, whisk together the 0.5 cup White Vinegar, 0.5 cup Granulated Sugar, and 1.5 tsp Diamond Crystal Kosher Salt until the sugar and salt dissolve completely. This liquid will transform your fresh vegetables into a tangy, crunchy relish. The sugar helps balance the vinegar's acidity while the salt enhances all the flavors.
Mix and Let Sit for Flavor Development
Pour the vinegar mixture over the vegetable combination in the large bowl. Using a wooden spoon, gently fold everything together until the vegetables are fully coated. The relish should look glossy and vibrant. For an extra touch of richness, drizzle in the 1 tbsp Extra-Virgin Olive Oil and mix gently.
Cover the bowl and let the relish sit at room temperature for 15 minutes. This short resting period allows the flavors to begin melding together. You'll notice the vegetables softening slightly and absorbing the tangy liquid. The relish should develop a pleasant, slightly sweet aroma with bright herbal notes from the dill.
Taste and Adjust Seasoning
After the 15-minute rest, taste the relish and adjust the seasoning if needed. If it tastes too tart, add a pinch more sugar. If it needs more brightness, add a splash of vinegar. The relish should have a perfect balance of sweet, tangy, and fresh flavors. This step ensures your relish tastes exactly how you want it.
Transfer the relish to an airtight container and refrigerate for at least 1 hour before serving. The flavors will continue developing in the fridge, becoming even more harmonious. This quick-pickled relish keeps well in the refrigerator for up to 5 days, making it perfect for meal prep.
Pro Tips For Making Apple Cucumber Relish Recipe Easy
- CHOP CUCUMBERS SMALLER THAN YOU THINK: I learned this the hard way—thick slices stay crunchy but turn mushy after a few days. Dice Persian cucumbers into ¼-inch cubes instead of ½-inch chunks. They’ll soften just enough to blend with the apples without turning to mush.
- SALT THE APPLES FIRST: Toss sliced Granny Smiths with ½ teaspoon kosher salt and let them sit for 10 minutes before mixing everything. This draws out excess water, so your relish stays bright and crisp, not watery. (Yes, even if you’re impatient like me.)
- USE 1:1 VINEGAR TO SUGAR RATIO: Diamond Crystal kosher salt is finer than table salt, so balance it with equal parts vinegar and sugar—start with ½ cup each, then adjust. Too much vinegar? The apples get bitter. Too little? It’ll taste cloyingly sweet. Taste as you go.
- STORE IT IN AIRLESS JAR: Pack the relish tightly into a clean, sterilized jar and press down with a spoon to remove air pockets. The acidity preserves it, but oxygen speeds up browning. Seal it and refrigerate—it’ll stay fresh for weeks without turning dull. (No fancy equipment needed.)
Troubleshooting perfect results
Too Tart Result
If your relish tastes overly acidic, it usually means the vinegar overpowered the sweetness. To fix this, stir in 1-2 teaspoons more granulated sugar and let it sit for another 10 minutes to dissolve.
For a more immediate fix, add 1 tablespoon honey or maple syrup and mix well. The key is balance—taste as you go! 💫
Mushy Vegetables
Overly soft cucumbers or apples often happen when the slices are too thick or the relish sits too long before refrigeration. To prevent this, stick to ¼-inch slices and refrigerate immediately after mixing.
For extra crunch, add 1 tablespoon cornstarch to the vinegar mixture before combining—it helps maintain texture. Also, use firmer apples like Granny Smith to resist softening.
Uneven Texture
If some pieces are soggy while others stay crisp, your slices likely weren’t uniform. Use a mandoline slicer for even ¼-inch strips—this ensures consistent texture. Another trick: Toss the sliced veggies with 1 teaspoon lemon juice before adding the vinegar mixture.
This pre-pickling step helps preserve crispness during the flavor development stage.
Mold or Fuzz
If you notice mold after storing, it’s usually from excess moisture or improper sealing. Always use an airtight container with a lid slightly loose (about ¼ inch) to allow gases to escape.
For longer storage, add ½ teaspoon citric acid to the vinegar mixture—it acts as a natural preservative. When in doubt, toss any fuzzy spots and store the remaining relish in a clean container.
Lacking Flavor
Bland relish often means the vinegar and sugar didn’t meld properly. Let it sit for at least 1 hour in the fridge before tasting—flavors develop over time. For extra depth, add ½ teaspoon mustard seeds or ¼ teaspoon celery seeds to the vinegar mixture.
A pinch of black pepper also adds warmth that balances the sweetness.
Storage Issues
If your relish separates or loses crispness after 5 days, it’s time to refresh it. Drain most of the liquid, pat the veggies dry with a paper towel, then toss them with 1 tablespoon fresh vinegar and ½ teaspoon sugar.
Store again for up to 3 more days. For freezing, portion into ice cube trays—each cube thaws quickly and maintains texture better than bulk freezing.
Nutrition facts
Frequently asked questions
Can I make this relish without vinegar?
You can substitute ½ cup lemon juice for the vinegar, but the flavor will be brighter and less tangy. For a milder taste, use ½ cup apple cider vinegar instead—it adds subtle sweetness. The vinegar is key for preservation, so if skipping it, eat the relish within 3 days.
How do I keep the cucumbers extra crisp?
Slice cucumbers ¼-inch thick using a mandoline for uniformity. Toss them with 1 teaspoon lemon juice before adding the vinegar mixture, then refrigerate immediately. For bonus crunch, add 1 tablespoon cornstarch to the vinegar—it helps maintain texture.
What’s the best way to store leftovers?
Transfer to an airtight container with the lid slightly loose (about ¼ inch) to allow gases to escape. Keeps for 2 weeks in the fridge. For longer storage, portion into ice cube trays and freeze—each cube thaws quickly without losing texture.
Can I use this relish in hot dishes?
Yes! The relish holds up well when reheated gently (under 300°F for 5 minutes) for stir-fries or tacos. The cucumbers may soften slightly, but the tangy flavor remains. For extra heat stability, add ½ teaspoon tapioca starch to the vinegar mixture before combining.
Why does my relish look watery?
This happens when the sugar doesn’t fully dissolve or the vegetables release excess liquid. Whisk the sugar and salt vigorously until dissolved, then let the relish sit for 15 minutes before refrigerating. For a thicker texture, drain excess liquid after 1 hour in the fridge and pat veggies dry with a paper towel.