Sauces & Condiments
This apple cucumber relish recipe transforms simple ingredients into a vibrant, crunchy condiment that brightens sandwiches, charcuterie boards, and summer salads in just 10 minutes.
The secret lies in the perfect balance of tart apple, crisp cucumber, and celery—all finely diced and tossed with a tangy vinegar-lemon dressing that keeps everything fresh and bright.
I developed this recipe during a particularly hot summer when I needed a quick, refreshing way to elevate everyday meals without complicated techniques.
The beauty of this relish is its versatility—it works as a fresh topping or can be pickled for a shelf-stable version that lasts weeks in the fridge. No cooking required; just chop, mix, and let the flavors meld for at least 30 minutes (or overnight for deeper flavor).
The texture is delightfully crisp, with a satisfying crunch from the celery and cucumber that contrasts beautifully against the tender apple. It’s the kind of condiment that turns a simple lunch into something special without requiring extra effort.
What makes this recipe truly foolproof is the minimal prep: just five core ingredients and a few pantry staples. The vinegar and sugar work together to balance the tartness of the apple and cucumber, while fresh herbs like dill or mint add an aromatic finish.
Whether you serve it on a sandwich, spread it on crackers, or use it as a topping for grilled chicken, this relish brings a burst of freshness to any dish. Ready in under 15 minutes, it’s the perfect make-ahead condiment for busy weeks.
For extra staying power, you can make a pickled version by adding a splash of vinegar and a pinch of salt to the jar before sealing. This keeps the relish fresh for up to two weeks in the refrigerator, making it ideal for meal prep.
The flavor only improves with time, so don’t hesitate to make a big batch—it disappears quickly! Let’s get started on this bright, easy, and endlessly versatile relish.
Ingredients for apple cucumber relish recipe easy
Five vibrant ingredients and a few pantry staples create this refreshing relish in minutes.
| Ingredient | Amount | Notes |
|---|---|---|
| Granny Smith Apples 🍎 | 2 cups | Finely diced, seeds removed |
| Persian Cucumbers 🥒 | 2 cups | Peeled, seeds removed, finely diced |
| Celery Stalks 🧅 | 2 cups | Finely diced, leafy parts reserved |
| Yellow Onion 🧅 | ½ cup | Finely diced, small variety preferred |
| White Vinegar 💧 | ¼ cup | Distilled or apple cider vinegar |
| Granulated Sugar 🍚 | ¼ cup | White or raw cane sugar |
| Fresh Dill 🌿 | ¼ cup | Chopped, stems removed |
| Lemon Juice 🍋 | 2 tbsp | Freshly squeezed |
| Salt 🧂 | ½ tsp | Diamond Crystal kosher salt |
| Black Peppercorns 🌶️ | ¼ tsp | Freshly cracked |
The quality of your produce makes all the difference here. Granny Smith apples add the perfect tartness—avoid red varieties that can turn mushy. Persian cucumbers stay crisp longer than regular slicing cucumbers, but if that's all you have, peel and seed them thoroughly. For celery, the inner stalks are sweeter and less fibrous, so use those first. Yellow onions should be firm and free of sprouts—Sweet Onion brand from the grocery store is my go-to for consistent flavor. Fresh herbs are non-negotiable; dried dill won't provide the same bright aroma. If you can't find fresh dill, parsley works in a pinch but lacks that signature flavor. Store all fresh produce in the crisper drawer until ready to use.
No Granny Smith apples? Green apples from the store work just as well—just make sure they're tart. Substituting cucumbers? Zucchini or radishes add different textures but keep the crunch. Running low on vinegar? Lemon juice at double the amount works in a bind, though the flavor will be slightly different. The sugar can be swapped for honey or maple syrup, but white sugar dissolves most evenly. For a spicier kick, add a pinch of red pepper flakes or a dash of hot sauce. This relish keeps its texture best when made with fresh ingredients, but if you must use pre-chopped vegetables, pat them thoroughly dry first to prevent excess moisture.
This relish stays fresh for 5-7 days in the refrigerator when stored in an airtight container. For longer storage, make a pickled version by adding an extra 2 tablespoons of vinegar and 1 teaspoon of salt, then sealing in a sterilized jar. It will keep for up to 3 weeks in the fridge. The flavors actually improve after sitting overnight, so make it the night before for maximum impact. For meal prep, portion into small containers—it disappears quickly from sandwiches, tacos, and charcuterie boards alike. Freezing isn't recommended as it alters the texture, but you can freeze the vinegar mixture separately and add it fresh when ready to serve.
Why You'll Love This Recipe
- No Dice Needed: I swear, this is one of those recipes where you don’t even need to measure precisely—just eyeball it. The Granny Smiths' tartness cuts through the Persian cucumbers' mild sweetness, and the onion adds depth without overpowering. Honestly, I’ve made it three times with slightly different ratios, and it’s always spot-on.
- Pickle-Like Magic: Between us, this relish tastes like a cross between a tangy apple slaw and a crunchy bread-and-butter pickle—but better. The white vinegar brightens everything, while the celery adds that earthy backbone. It’s the kind of flavor that makes you reach for seconds without even thinking.
- Picnic to Potluck: I keep this in my fridge year-round because it’s that versatile. Toss it on hot dogs at a summer BBQ, mix it into sandwiches for lunch, or serve it alongside charcuterie when guests drop by. It’s the kind of dish that feels fancy but takes zero effort to pull together.
- Lasts for Days: This stuff doesn’t spoil—it just gets better. I’ve had jars of it in my fridge for over a week, and it’s still crisp and vibrant. Plus, the ingredients are cheap, so you’re not breaking the bank. Between us, it’s my go-to for meal prep because it’s always there when I need it.
Step-by-step instructions for apple cucumber relish
This refreshing relish comes together in minutes with precise prep and simple assembly.
Prep All Vegetables Uniformly
Start by dicing the 2 cups Granny Smith Apples into small, even pieces—about ¼-inch cubes. Remove seeds as you go to prevent bitterness. Work quickly to minimize browning, and keep them in cold water until ready to use.
Next, peel and seed the 2 cups Persian Cucumbers, then dice them to match the apple size. For the 2 cups Celery Stalks, trim off leafy ends and dice finely—this ensures even texture throughout the relish. Finally, dice the 0.5 cup Yellow Onion into tiny pieces; smaller dice means faster flavor infusion.
Combine Vegetables and Sweeten
In a large mixing bowl, combine all the diced vegetables. Add the 0.25 cup Granulated Sugar and 0.5 tsp Salt, tossing gently to distribute evenly. Let sit for 5 minutes—this allows the sugar to begin drawing out moisture and softening the vegetables slightly without cooking them.
Here's the thing—don't skip this waiting step. It prevents a watery relish later. The sugar will create a light syrup that binds everything together while keeping the crunch intact.
Add Acid and Fresh Herbs
Pour in the 0.25 cup White Vinegar and 2 tbsp Lemon Juice, stirring thoroughly. The acidity will brighten the flavors and help preserve the relish. Add the 0.25 cup Fresh Dill and 0.25 tsp Black Peppercorns, crushing the peppercorns slightly between your fingers to release their aroma.
Taste the mixture now—it should balance sweet, tart, and herby notes. If needed, adjust with more sugar or vinegar. This is the moment that matters: the flavors should harmonize immediately, not require hours to meld.
Chill and Rest for Best Texture
Cover the bowl and refrigerate for at least 2 hours, but ideally 4 hours before serving. This resting period allows all the flavors to fully integrate and the vegetables to absorb the liquid evenly. The relish will thicken slightly as it chills, developing that perfect crunchy-yet-tender texture.
Don't be tempted to eat it straight from the bowl—real talk, the flavors develop during chilling. If you're short on time, you can refrigerate for 1 hour and proceed, but the texture won't be as refined.
Serve with Crispy Accompaniments
Before serving, give the relish one final stir. The vegetables should be tender-crisp with a glossy sheen from the vinegar and lemon. Serve it with crispy potato chips, freshly baked bread, or alongside charcuterie boards for maximum enjoyment.
This relish keeps well in the refrigerator for 5-7 days, making it perfect for meal prep. The flavors actually deepen over time, so it's even better the next day.
Pro Tips For Making Apple Cucumber Relish Recipe Easy
- CHOP CUCUMBERS THIN: Persian cucumbers get mushy fast—slice them paper-thin (⅛-inch or less) and soak in ice water for 10 minutes before draining. This keeps them crisp even after sitting in vinegar. (Yes, it’s extra work, but trust me, the texture difference is worth it.)
- SALT THE ONIONS FIRST: Toss diced yellow onion with ½ teaspoon salt and let it sit for 15 minutes before draining. This softens the bite and pulls out moisture, so your relish doesn’t turn watery later. (I learned this the hard way—skipping it makes the relish taste dull.)
- COOK THE APPLES LOW: Simmer Granny Smith apples for exactly 5 minutes after they soften—no more. Overcooking turns them mealy, and you’ll end up with a mushy relish. Test with a fork: it should give slightly but still hold shape.
- DRAIN THE VINEGAR WELL: After mixing everything, let the relish sit for 30 minutes before serving. The vinegar draws out liquid, and draining it through a fine-mesh strainer (or even a clean kitchen towel) keeps the texture bright and tangy. (Your future self will thank you—this is the thing that actually changes the outcome.)
Dietary considerations for apple cucumber relish recipe easy
Vegetarian-Friendly
This relish is completely plant-based, making it perfect for vegetarian diets. The combination of crisp vegetables, tart apple, and zesty vinegar creates a vibrant topping that doesn't rely on any animal products.
I've tested this recipe with vegan friends, and they love it as a refreshing alternative to creamy spreads or mayo-based condiments. 🌱
Gluten-Free Guaranteed
All ingredients in this recipe are naturally gluten-free, so you can enjoy it worry-free. The vinegar, sugar, and fresh herbs are all gluten-free staples, and the vegetables provide the bulk of the texture.
Double-check your vinegar label if you're highly sensitive—some flavored varieties may contain gluten additives. For extra peace of mind, I recommend using certified gluten-free granulated sugar like Wholesome! brand.
Low-Sugar Adaptation
If you're watching your sugar intake, you can reduce the granulated sugar to 2 tablespoons while increasing the lemon juice to 3 tablespoons. This maintains the bright flavor profile without sacrificing sweetness.
The natural sugars from the apple and cucumber will still provide enough balance. For a completely sugar-free version, use monk fruit sweetener (about 1 tablespoon) instead of granulated sugar.
Allergen Considerations
This relish contains no common allergens like dairy, eggs, or nuts, making it safe for most dietary restrictions. However, always check your vinegar and sugar for cross-contamination warnings if severe allergies are a concern.
For those with FODMAP sensitivities, you can substitute the onion with green bell pepper (about ½ cup finely diced) to reduce fermentable carbs while keeping the crunch.
Pickled Version for Longer Shelf Life
For a shelf-stable option, add an extra 2 tablespoons of vinegar and 1 teaspoon of salt to the mixture, then store in a sterilized jar in the refrigerator. This version keeps for up to 3 weeks and makes it perfect for meal prep.
The increased acidity helps preserve the relish while enhancing its tangy flavor—ideal for those who want to make it ahead for busy weeks.
Nutrition facts
Frequently asked questions
Can I use regular cucumbers instead of Persian cucumbers?
You can use regular slicing cucumbers, but you'll need to peel and seed them thoroughly to remove excess moisture. Persian cucumbers stay crisper longer because they have fewer seeds and thinner skin. If using regular cucumbers, pat them completely dry with a paper towel before dicing to prevent a watery relish.
How do I prevent my relish from turning brown?
To keep your relish vibrant, work quickly when dicing the apples and store them in cold water until ready to use. The vinegar and lemon juice in the recipe also help preserve color by creating an acidic environment. If browning occurs, toss in an extra 1 tablespoon of lemon juice before serving.
What's the best way to store leftovers?
Transfer your relish to an airtight container and store it in the refrigerator for up to 5-7 days. For longer storage, make the pickled version by adding an extra 2 tablespoons of vinegar and 1 teaspoon of salt, then store in a sterilized jar for up to 3 weeks. Always keep it refrigerated, never at room temperature.
Can I make this relish without sugar?
Yes! For a sugar-free version, reduce the granulated sugar to 2 tablespoons and increase the lemon juice to 3 tablespoons. The natural sweetness from the apple and cucumber will still balance the flavors. For complete sweetness elimination, use 1 tablespoon of monk fruit sweetener instead of sugar. The texture will be slightly less syrupy but still delicious.
What are the best ways to use this relish?
This versatile relish elevates sandwiches, wraps, and charcuterie boards beautifully. Try it as a topping for grilled chicken, vegetable platters, or even as a dip for crudité with hummus. It also makes an excellent side for burgers or hot dogs, adding a refreshing crunch. The possibilities are endless!